The forge's living heart. Keep it turned away from the group, spread when marked, share the Molten Burden, and break Eruption.

Bosses

Cinderheartlevel 8Boss
Heart of the Forge

The living heart of the forge beneath Sunderkeep. It took four champions to put it out the last time.

EruptionMolten BurdenScorch MarksCinderlingsMolten CleaveBrand
The Forge Roars at 50% health: Cinderheart burns hotter. It hits harder and calls more cinderlings.

Loot

Class

Personal loot, item level 10. Full spoils once per boss per character per day.

Warrior
Every kill: one of these, guaranteed (a second at 35%)
Raid set and legendary
Repeat kills the same day one Gilded Chest roll from this list
Rogue
Every kill: one of these, guaranteed (a second at 35%)
Raid set and legendary
Repeat kills the same day one Gilded Chest roll from this list
Wizard
Every kill: one of these, guaranteed (a second at 35%)
Raid set and legendary
Repeat kills the same day one Gilded Chest roll from this list
Priest
Every kill: one of these, guaranteed (a second at 35%)
Raid set and legendary
Repeat kills the same day one Gilded Chest roll from this list
Druid
Every kill: one of these, guaranteed (a second at 35%)
Raid set and legendary
Repeat kills the same day one Gilded Chest roll from this list

Materials and more

Forgeheart Ember every kill, a second at 50%12 Warden's Marks2 × boss gold

Guide

A living forge heart. It fights where it stands and grows hotter below half health.

Molten Cleave: A 120 degree cone in front of Cinderheart fills and bursts for heavy fire damage.
Brand: Every melee swing adds a stack to its target for 12 seconds. Each stack makes Cinderheart's hits on that hero 12% stronger, up to 8 stacks.
Scorch Marks: Two heroes get a circle that follows them for 5 seconds, then bursts on everyone inside it.
Molten Burden: One hero is marked for 5 seconds. The blow is split between everyone within 3.6 m of them; fewer than two and it hits harder.
Eruption: A long cast that hits the whole arena. Stuns, freezes, fears and interrupts break it.
Cinderlings: Two walking embers join the fight, up to four at once.
The Forge Roars Below 50%: Cinderheart hits harder and summons more often.
Enrage: After 3 minutes 50 seconds Cinderheart hits twice as hard and much faster.

Challenges

Win in under 170 seconds.Win without ever dropping below 25% health.Interrupt 1 enemy cast with a stun, freeze, fear or interrupt, then win.