Sir Gideon Ofnir, the All-Knowing

Key takeawaysSpoilers

The encounter rewards players who deny Gideon time to cast rather than trying to outlast his entire spell catalogue.

• Close the distance immediately Gideon's main advantage is the space needed to select and cast ranged magic. A direct opening rush can stagger or interrupt him before he establishes a safe casting pattern.
• Expect a variable spell list His arsenal is not identical in every playthrough. Earlier progress against major enemies can add corresponding attacks to the encounter, so do not assume a previous run's spell pattern will be repeated.
• Use the arena's openness carefully The Erdtree Sanctuary gives both combatants room to maneuver. That space helps you dodge wide-area magic, but it also lets Gideon retreat and reset unless you keep steady pressure.
• The reward is equipment, not a new remembrance Defeating Gideon grants the All-Knowing armor set and runes. The set is his principal named equipment reward and is obtained before the next boss encounter.

Sir Gideon Ofnir, the All-Knowing boss guideSpoilers

Sir Gideon Ofnir, the All-Knowing is a mandatory humanoid boss encountered in Leyndell, Ashen Capital, shortly before the final sequence of Elden Ring.

Sir Gideon Ofnir is fought inside the Erdtree Sanctuary after the player has advanced through Leyndell and defeated Morgott, the Omen King. The encounter is not an optional detour: defeating Gideon opens the way toward Godfrey, First Elden Lord, so players who are stuck at this point should treat the fight as the next required step rather than searching for another route around the arena.

Gideon fights as a spellcaster rather than a conventional heavily armored warrior. He can use a mixture of sorceries and incantations associated with information he has gathered about powerful figures across the Lands Between, including attacks connected with Shardbearers and other major threats. His ranged coverage is wide, but he is vulnerable to sustained pressure, especially when a melee build stays close enough to interrupt his casting rhythm.

The fight is distinctive because the boss's available magic reflects earlier progress. Depending on which major enemies and regions the player has completed, Gideon can gain additional spells, including attacks associated with Malenia, Blade of Miquella, Mohg, Lord of Blood, and Rykard, Lord of Blasphemy. Optional-boss completion can therefore make this apparently straightforward encounter more varied and dangerous.

Gideon's importance extends beyond the arena. He was the leader of the Tarnished at Roundtable Hold and presented himself as a source of knowledge about the Elden Ring's wider conflict. His late-game hostility turns a former source of guidance into a required obstacle, and his defeat rewards the player with his distinctive All-Knowing equipment before the final approach continues.

Where Gideon appears in progressionSpoilers

Requirements and preparation

There is no special item or build requirement for entering the fight, but late-game preparation matters because Gideon's magic covers several ranges and damage patterns.

• RequiredReach Leyndell, Ashen CapitalThe encounter becomes available as part of the late-game main route through the transformed capital.
• RequiredDefeat Morgott, the Omen KingThe main-story progression through Leyndell must be advanced before the route to Gideon's arena is open.
• RecommendedBring a way to pressure a casterFast melee weapons, jump attacks, charged attacks, spirit support, or other tools that interrupt Gideon reduce the time he has to cast.
• RecommendedPrepare for repeated area attacksKeep enough stamina and arena space available to dodge spells rather than spending every resource on a single opening exchange.
• OptionalReview optional-boss progressIf Malenia, Blade of Miquella, Mohg, Lord of Blood, or Rykard, Lord of Blasphemy has been defeated, be ready for the corresponding additions to Gideon's spell selection.

Encounter phases and attacksSpoilers

1. 1

   The All-Knowing's spell barrage

   Starts: The fight begins when the player enters Gideon's arena and approaches him.

   Not specified.

   Gideon remains a single primary phase, using ranged sorceries and incantations while repositioning around the Erdtree Sanctuary. The exact catalogue can expand according to earlier progress, so the safest plan is to interrupt him before he can cycle through multiple spells.

   • Glintstone CometshardTell Gideon raises his staff and begins a conventional forward sorcery cast.Answer Sprint laterally or roll through the projectile, then use the recovery window to close distance.
   • CometTell A larger, more threatening projectile is prepared with a clear casting animation.Answer Use the arena's width to move sideways and avoid lining up directly in front of him; punish after the projectile passes.
   • Law of CausalityTell Gideon creates a distinctive defensive effect around himself that retaliates after repeated close-range hits.Answer Do not continue attacking blindly once the effect is active. Pause briefly, let the retaliation occur, and resume pressure after it has discharged.
   • Rykard's RancorTell A skull-like projectile effect travels toward the player and can create a delayed area threat.Answer Keep moving rather than rolling in place, and avoid returning to the lingering effect while trying to attack Gideon.
   • BloodboonTell Gideon performs a blood-flame incantation that places a dangerous burning area in front of him.Answer Move out of the affected ground before pursuing; approach from an angle instead of crossing the active blood-flame.
   • Scarlet AeoniaTell If the attack is available, Gideon creates a large scarlet-blossom explosion associated with Malenia.Answer Immediately create distance and wait for the bloom and its lingering hazard to clear before re-engaging.
   • Black FlameTell A dark flame projectile is cast toward the player's current position.Answer Dodge on release and keep enough distance to avoid being clipped while beginning a counterattack.
   • A summon or aggressive co-op partner can divide Gideon's attention and make his casting openings easier to reach.
   • A pure ranged approach is possible, but it gives Gideon time to answer with his own projectile chains; use coverless open space to keep moving rather than standing still and trading casts.
   • The arena contains enough room to retreat from large effects, but backing away for the entire encounter allows Gideon to dictate the pace. Alternate evasion with decisive bursts of damage.

Boss strategySpoilers

• Location
  Erdtree Sanctuary, Leyndell, Ashen Capital
• Health
  Not specified.

Enter with the intention of reaching Gideon quickly. Once close, use short aggressive strings rather than a slow single-hit rhythm, because repeated pressure can interrupt his casts and prevent him from freely selecting attacks. Watch for Law of Causality before committing to another sequence; its retaliatory effect makes careless continued attacks costly. When Gideon creates distance, circle or sprint laterally through ordinary projectiles, then resume the approach instead of attempting to stand and trade. If Scarlet Aeonia, Bloodboon, or Rykard's Rancor appears, prioritize leaving the affected area over landing one extra hit. The safest overall pattern is rush, stagger or interrupt, disengage from a named area attack, and rush again.

StrategySpoilers

1. 01

   Enter the arena and approach Sir Gideon Ofnir, the All-Knowing.

   Reach the Erdtree Sanctuary

   Advance through Leyndell, Ashen Capital, until the route reaches the Erdtree Sanctuary and Gideon's arena. The fight is part of the critical path after the capital's story progression, so there is no separate side-quest item needed to start it.

   Location: Leyndell, Ashen Capital — Erdtree Sanctuary

   TipSpend nearby resources and settle your equipment before crossing into the boss space, because the encounter begins as soon as you commit to the arena.

   Watch outDo not treat Gideon as an optional NPC confrontation; the route beyond the capital remains blocked until he is defeated.

   Checkpoint
2. 02

   Reach melee range or establish immediate offensive pressure.

   Close the opening distance

   At the start of the encounter, move directly toward Gideon rather than waiting at the far side of the sanctuary. The opening is your best chance to begin a stagger or force him to abandon his first cast before his ranged pressure becomes organized.

   Location: Erdtree Sanctuary

   TipA fast approach with a weapon that has strong poise damage is generally more reliable than opening with a slow buff animation in front of him.

   Watch outStanding still to cast or heal at the starting distance gives Gideon the initiative and can expose you to a projectile before you have created an escape route.

3. 03

   Prevent Gideon from freely chaining standard projectile spells.

   Interrupt his ordinary sorceries

   Once within range, attack through his staff-casting animations and keep your pressure controlled. Sidestep or roll through Glintstone Cometshard and Comet rather than retreating in a straight line, then use the brief recovery after each cast to continue closing or strike.

   Location: Erdtree Sanctuary

   TipLateral movement preserves the distance needed to punish him, while repeated attacks are more useful than a single cautious hit against his low-poise casting posture.

   Watch outDo not spend all stamina on an attack string; if the first interruption fails, retain enough stamina for the next projectile or retreat.

4. 04

   Avoid the defensive spell's retaliation while maintaining pressure.

   React to Law of Causality

   When Gideon surrounds himself with the defensive effect of Law of Causality, stop treating every opening as safe. Allow the retaliatory effect to trigger or wait for the protection to end, then resume your attack sequence rather than repeatedly striking into it.

   Location: Erdtree Sanctuary

   TipThe spell is a timing check, not a reason to abandon the close-range plan entirely; a short pause is safer than a full retreat that gives Gideon room to cast.

   Watch outContinuing a long attack string into the active effect can turn a successful stagger attempt into avoidable damage.

5. 05

   Adjust the route to Gideon according to the attacks available in this playthrough.

   Identify optional-boss additions

   Watch Gideon's spell choices for attacks linked to earlier optional victories. Rykard's Rancor creates a delayed skull-based threat, Bloodboon leaves dangerous blood-flame in the approach, and Scarlet Aeonia produces a large bloom and lingering hazard if Malenia's associated attack is present.

   Location: Erdtree Sanctuary

   TipKeep the arena's outer space available for large attacks instead of fighting with your back against a wall or obstacle.

   Watch outDo not roll toward Gideon through Scarlet Aeonia or active Bloodboon simply to preserve damage uptime; the hazard can invalidate an otherwise successful attempt.

6. 06

   Prevent delayed hazards from controlling the entire arena.

   Re-engage after each area attack

   When a wide-area spell appears, prioritize survival until its active zone has ended. Reposition around the effect, watch Gideon's next cast, and then use the recovery window to cross the remaining distance and restart close-range pressure.

   Location: Erdtree Sanctuary

   TipMoving continuously is more dependable than panic-rolling repeatedly, because delayed effects punish a player who returns to the same spot.

   Watch outLingering spell effects can catch you after the visible projectile has passed, so do not heal or counterattack until the ground and air around you are clear.

7. 07

   Secure the rewards and proceed toward Godfrey, First Elden Lord.

   Collect the All-Knowing rewards

   After Gideon's defeat, collect the reward associated with the encounter and confirm that the All-Knowing armor pieces are available before continuing. The victory also clears the mandatory obstacle immediately before the next major boss on the route.

   Location: Erdtree Sanctuary and the route beyond it

   TipIf you intend to use Gideon's equipment for its appearance or role-playing value, record the reward before moving on because the story immediately continues toward the final sequence.

   Watch outThe encounter's victory does not end the game; continue prepared for another mandatory boss rather than assuming the capital route is complete.

   Checkpoint

Pre-fight checklist

• Equip a weapon or skill capable of sustained close-range pressure.Gideon's low poise makes interruption a central part of the fight.
• Keep enough stamina for lateral dodges after attacking.Ordinary projectiles are easier to avoid when you can move sideways instead of exhausting the bar.
• Leave room in the arena for large area attacks.Avoid beginning the fight with your back against the edge of the sanctuary.
• Check whether Malenia, Mohg, or Rykard has been defeated.Their associated attacks can appear in Gideon's spell selection.Optional
• Carry a reliable healing opportunity plan.Heal only after creating distance or during a clear casting recovery, not while a projectile or lingering hazard is active.
• Consider spirit or co-op support.Additional pressure can stop Gideon from freely establishing his ranged rotation.Optional

Weaknesses and damage

Failure conditions

• Standing at long range without movingGideon can chain ranged attacks while the player remains predictable. Use lateral movement and change distance deliberately instead of waiting for every spell to finish.
• Attacking through Law of CausalityThe defensive effect can punish repeated hits. Pause when it becomes active and resume after the retaliation has occurred.
• Returning to a lingering hazardRykard's Rancor, Bloodboon, and Scarlet Aeonia can continue threatening an area after their initial visual effect. Reposition fully before healing or attacking.
• Running out of stamina during an approachA failed attack string leaves no resource for the next dodge. Preserve stamina so a missed interruption does not become a direct hit.
• Assuming the spell list is identical between runsOptional-boss and story progress can change Gideon's available attacks. Relearn the visible tells rather than relying on a memorized sequence.

Rewards and dropsSpoilers

• All-Knowing armor set
  Gideon's distinctive equipment set, consisting of the All-Knowing Helm, All-Knowing Armor, All-Knowing Gauntlets, and All-Knowing Greaves. It is the named gear reward tied directly to defeating him.
• Runes
  The encounter awards runes after victory. The exact value is omitted here because no verified figure was supplied in the source pack.

LoreSpoilers

Sir Gideon Ofnir built his identity around knowledge. At Roundtable Hold, he served as a central adviser to the Tarnished and maintained records about the demigods, their Great Runes, and the wider conflict surrounding the Elden Ring. His title, the All-Knowing, reflects both his ambition and the authority he claimed through information rather than battlefield strength.

Gideon's relationship with the player changes as the journey approaches its conclusion. He is not simply another hostile champion encountered on the road: he is a figure who has interpreted the same world and the same Tarnished mission from inside the Roundtable's leadership. The boss fight therefore represents a break with a former source of guidance and a confrontation with the limits of his certainty.

His combat style expresses that characterisation. Gideon does not rely on one signature weapon or a single physical gimmick; instead, he draws on knowledge gathered from other powerful beings and turns their techniques into a flexible spell arsenal. The attacks linked to Malenia, Mohg, and Rykard make his claim to know the world's great powers mechanically visible, even when that knowledge does not make him invulnerable.

After the battle, the All-Knowing set preserves the visual identity of the adviser who placed learning above direct martial display. His defeat occurs immediately before the final run of mandatory confrontations, making him both a personal betrayal within the Roundtable's story and a practical gatekeeper for the endgame route.

Entities connected to the encounterSpoilers

• Morgott, the Omen KingA preceding mandatory boss in the capital route.
• Godfrey, First Elden LordThe next mandatory boss after Gideon's defeat.
• Malenia, Blade of MiquellaHer associated attack may be part of Gideon's expanded arsenal.
• Mohg, Lord of BloodHis associated blood-flame attack may be used by Gideon.
• Rykard, Lord of BlasphemyHis associated rancor attack may be used by Gideon.

TriviaSpoilers

• Gideon's combat identity is built around borrowing or reproducing techniques associated with other major figures, reinforcing his title as a collector of knowledge rather than a specialist with one signature attack.
• The presence of attacks associated with optional bosses means that exploring more of the Lands Between can alter a later mandatory encounter instead of merely adding unrelated rewards.
• The All-Knowing armor set is awarded after the boss fight and preserves Gideon's scholarly, heavily robed visual identity rather than presenting him as a conventional knight.
• Gideon is one of the rare late-game opponents whose narrative relationship with the player begins as an apparent source of information at Roundtable Hold before ending in a direct boss confrontation.

Relationships