The Spire Arbiter is a level 45 boss in Witchspire Summit. This guide covers the fight in solo and in 6-player co-op, with phase-by-phase strategy and the loot table.
Final boss. Phase 3 locks all familiars out. Bring co-op.
Emberkin is the best Coven for the The Spire Arbiter fight thanks to its single-target burst. Mirewarden is the second-best pick for solo — its self-heal covers the biggest damage windows in phase 2.
The The Spire Arbiter uses basic melee and a ranged spell. Dodge-roll through the spell (it has a clear telegraph) and use the gaps to land 3–4 hits. Save your cooldowns for phase 2.
A new attack pattern starts. The Spire Arbiter applies a stacking debuff — cleanse it at your Hearth or use a Mire-Cure Potion. At this point, your Coven’s signature spell is your biggest damage tool. Use it on cooldown.
The Spire Arbiter summons adds. Keep the Hearth Hound on the adds and burn the boss. In solo play, the safest pattern is to kite adds around the arena while landing ranged attacks.
On Hard mode the The Spire Arbiter has +50% HP, +25% damage, and one extra attack per phase. The unique cosmetic drop is The Spire Arbiter’s Visage, a head-piece with a unique particle effect.
