Mithrala Lifebane vs Polara Fireheart

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Mithrala Lifebane	Dark Elves	Void	Support	Legendary	Accuracy 80 Place: All battles
Polara Fireheart	The Sacred Order	Force	Attack	Mythical	Attack 40% Place: Arena

Stats comparison

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Mithrala Lifebane	60	6	20310	870	1354	109	15	50	30	10
Polara Fireheart	60	6	15195 -5115	1509 +639	1332 -22	104 -5	15	63 +13	30	0 -10

Skills comparison

Mithrala Lifebane	Libation of Pain Formula: 2*DEF Attacks 2 times at random. Each hit has an 80% chance of placing a 5% [Poison] debuff for 2 turns. Poison 5%	Sigil of Toxic Glory Formula: 4*DEF Attacks all enemies. Places a [Hex] debuff for 2 turns. Also places a 60% [Increase DEF] buff and a 50% [Increase ATK] buff on all allies for 2 turns. Cooldown: 5 Increase ATK 50% Increase DEF 60% Hex	Brimming Cylix Removes all debuffs from all allies, then places a 25% [Strengthen] buff and a [Shield] buff equal to 30% of this Champion’s MAX HP on all allies for 2 turns. Cooldown: 5 Shield Strengthen	Gaze of Stone [P] Formula: 1*ACC Whenever this Champion is attacked by an enemy under a [Hex] debuff, has a 50% chance of applying a [Petrification] debuff on the attacker for 1 turn. Whenever an ally is attacked by an enemy under a [Hex] debuff, has a 30% chance of applying a [Petrification] debuff on the attacker for 1 turn. Also increases this Champion’s RES. The amount by which it is increased is equal to the amount of ACC this Champion has. Petrification	-
Polara Fireheart	Burning Zeal Formula: 4ATK+1.2DEF Formula: 4ATK+1.2DEF Attacks 1 enemy. Places an extra hit if the target is under any buffs or debuffs. Has a 25% chance of granting an Extra Turn.	Faithful Conflagration Formula: 1.8ATK+1.2DEF Formula: -0.25 Formula: 0.03REL_TRG_B_DEF Formula: 0.03REL_TRG_B_RES Formula: -0.75 Attacks 1 enemy 3 times. Each hit will ignore 25% of the target's DEF. Will ignore 50% of the target's DEF instead, if the target is under a [HP Burn] debuff or a [Freeze] debuff. Will ignore 100% of the target's DEF instead, if the target is under both debuffs. Each hit also destroys the target's DEF and RES by 3% (stacks up to 30%). Places a [HP Burn] debuff on all enemies for 2 turns. This debuff cannot be resisted. Cooldown: 4 HP Burn	Pyro Maxima Formula: 4ATK+1.2DEF Attacks all enemies. Before attacking, instantly detonates all stacks of any [HP Burn] debuff on the initial target, then places another [HP Burn] debuff on all enemies for 1 turn. This debuff cannot be resisted. This attack deals single-target damage to each target individually, rather than AoE damage. Will ignore [Shield], [Block Damage], and [Unkillable] buffs. Places a [Block Revive] debuff on targets that are killed while under a [HP Burn] debuff or a [Freeze] debuff. Grants an Extra Turn if this attack kills an enemy. Cooldown: 4 Block Revive HP Burn	Metamorph Formula: 1 Transforms this Champion into their Alternate Form. Then grants an Extra Turn. Cooldown: 4	Elemental Mistress [P] Formula: 0.50DMG_MUL Formula: 0.50DMG_MUL Formula: 1DMG_MUL Formula: -0.50DMG_MUL This Champion deals 50% more damage against enemies under a [HP Burn] debuff or a [Freeze] debuff, and receives 50% less damage from enemies under [HP Burn] debuffs. This Champion deals 100% more damage against enemies under both [HP Burn] and [Freeze] debuffs. This Champion ignores the damage reduction granted by [Freeze] debuffs. This Champion is immune to both [Freeze] and [HP Burn] debuffs.