Windrunner Spire M+ Guide: All 4 Bosses and the Push-Key

Windrunner Spire at a Glance

The Windrunner family's ancestral tower in Eversong Woods. The dungeon entrance sits at coords 35.50, 78.80, unlocks at level 81, and is one of the four new dungeons in the Season 1 Mythic+ rotation.

Four bosses. Tight, vertical layout — entryway, main hall, rooftop. Alleria narrates the intro cinematic, and the dungeon delivers a steady ramp of mechanics that prep newer players for the harder rotation entries (Magisters' Terrace and Nexus-Point Xenas). Item levels: 214 Normal, 230 Heroic, 246 Mythic 0.

Boss 1: Emberdawn

A fire-themed phoenix opener. The fight tests your ability to manage debuffs and reposition for AoE windows.

Key Abilities

• Flaming Updraft — debuff applied to a random player. Walk to a corner of the room before it expires; the explosion damages anything nearby. Use a defensive cooldown if you're targeted.
• Burning Gale — channel that summons Flaming Twisters around the room. The twisters move in patterns; weaving through them is the dance of the fight.
• Fire Breath — frontal cone during the Burning Gale channel. Tank turns the boss away from melee.
• Searing Beak — heavy single-target hit on the tank. Active mitigation required.

Role Notes

• Tank: Position Emberdawn in a corner so Flaming Updraft players have somewhere to displace to. Major defensives for Searing Beak.
• Healer: Spot-heal Flaming Updraft targets after detonation. Bank a major cooldown for Burning Gale — the channel ticks group damage on top of twister overlap.
• DPS: Dodge twisters, maintain damage, don't get tunnel-vision on the boss while ignoring Updraft displacement.

Boss 2: Derelict Duo (Kalis & Latch)

The two-target encounter. Built around Broken Bond — kill them simultaneously or the survivor enrages.

Key Abilities

• Shadow Bolt — Kalis casts on the tank. Interrupt rotation required.
• Curse of Darkness — debuff that, on expiration, spawns a Dark Entity add. Outrange or CC it.
• Splattering Spew — group-wide damage. Strategic placement of the residual gunk matters; don't drop it on top of the kill zones.
• Debilitating Shriek — Kalis casts; the only way to stop it is to use Latch's Heaving Yank ability against him. This is a forced-coordination mechanic.
• Bone Hack — tank-buster on a long timer. Active mitigation.

Role Notes

• Tank: Stack the duo for cleave but leave the tank-swap option open. Active mitigation through Bone Hack.
• Healer: Pop a major cooldown during each Splattering Spew. Plan dispels around Curse of Darkness.
• DPS: Balance damage between both targets the entire fight. The kill-window can be tight if one drops below 15% while the other is at 30%; if you see a gap, swap.

Boss 3: Commander Kroluk

The phase-transition fight. Kroluk hits 66% and 33% HP triggers — at each, Rallying Bellow spawns adds and applies a Shield Wall aura that reduces boss damage taken.

Key Abilities

• Rallying Bellow — phase trigger at 66% and 33%. Adds spawn; boss takes reduced damage until they're cleared.
• Reckless Leap — Kroluk leaps to the furthest player. You can bait this — the furthest player intentionally absorbs it with a defensive popped.
• Intimidating Shout — fear AoE. Stack the group to reduce its impact.
• Bladestorm — phase ability during add waves. Stay outside its radius.
• Rampage — major boss damage burst. Major defensives all around.

Role Notes

• Tank: Rampage requires your strongest defensive. Stack the adds for cleave during Rallying Bellow phases.
• Healer: Top everyone before each Rallying Bellow trigger — that's the burst window. Spot-heal the bait target after Reckless Leap.
• DPS: Burn adds during phase transitions. Ignore the boss until adds drop. Resume DPS once Shield Wall fades.

Boss 4: The Restless Heart

The rooftop finale. Built around vertical positioning — the Turbulent Arrows mechanic launches you upward, which you use offensively to clear debuffs.

Key Abilities

• Squall Leap — debuff that needs to be cleared by walking into a Turbulent Arrows pulse, which knocks you upward.
• Arrow Rain — patterned ground AoE. Dodge through the gaps.
• Bolt Gale — long-cast AoE. Major defensives during the cast.
• Billowing Wind — knockback. Use Turbulent Arrows for vertical displacement to negate it.
• Tempest Slash — tank-buster. Active mitigation per cast.

Role Notes

• Tank: Active mitigation rotation is your full-time job here. Tempest Slash hits hard and on a short timer.
• Healer: Spot-heal Bolt Gale targets. Adjust cooldown timing based on Squall Leap stack count — high stacks compound the next damage tick.
• DPS: Use the knockup mechanics aggressively to negate Billowing Wind. Don't let Squall Leap stacks build — clear them every Turbulent Arrows pulse.

Trash Priorities

The trash route benefits from a few specific mob priorities:

• Restless Stewards — interrupt Spirit Bolt casts. They land hard on whoever's targeted.
• Spellguard Protectors — drop Spellguard Protection spheres. Avoid them; they damage and slow.
• Devoted Woebringers — apply Pulsing Shriek absorb shields. Burn through the absorb before main damage.
• Various poison/bleed mobs — manage debuff stacks with cleansing CDs where available.
• Break Ranks chargers — telegraphed charge. Sidestep and resume.
• Chain Lightning casters — interrupt every cast. Lightning chains through the entire pull.

M+ Affix Considerations

• Tyrannical — The Restless Heart becomes the pacing limit. Tempest Slash on Tyrannical is brutal.
• Fortified — Rallying Bellow add waves on Kroluk are the punishment. Bring AoE.
• Bursting — Splattering Spew on Derelict Duo adds another layer of group damage.
• Sanguine — drop Splattering Spew gunk pools far from the kill zone.
• Storming — vertical positioning on The Restless Heart gets harder; use Turbulent Arrows to escape Storming circles.

Key Loot

The dungeon's signature drop is the Spectral Hawkstrider — a low-rate mount drop from any boss. Farm-eligible across friend keys; not lockout-tied to weekly Vault progression.

Notable weapon drops include the Emberdawn Defender two-hand sword from the namesake first boss, and the Roost Warden's Bough staff from Kroluk.

Class Picks That Work Here

Windrunner Spire rewards groups with strong interrupt density (Restless Stewards' Spirit Bolt and Kalis's Shadow Bolt both punish weak kicks), reliable adds-burst on Kroluk's Rallying Bellow phases, and mobility for The Restless Heart's vertical dance.

Havoc DH excels here — Shift mobility solves the Restless Heart positioning, and Eye Beam wrecks Kroluk's add waves. Demonology Warlock's Imps explode Rallying Bellow groups in seconds. Brewmaster Monk handles the tank role best because Stagger smooths Tempest Slash and Bone Hack.

Related Reading

• All 8 Midnight Dungeons Guide — overview of the full rotation
• Magisters' Terrace M+ Guide — sister Quel'Danas-area dungeon
• Maisara Caverns M+ Guide — Zul'Aman M+ rotation entry
• Mount Guide — the Spectral Hawkstrider in context