Mithrala Lifebane vs Rock Breaker

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Mithrala Lifebane	Dark Elves	Void	Support	Legendary	Accuracy 80 Place: All battles
Rock Breaker	Dwarves	Spirit	Defence	Epic	Defence 30% 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
Rock Breaker	60	6	18495 -1815	716 -154	1354	91 -18	15	50	75 +45	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
Rock Breaker	Whirling Hammers Formula: 2.5DEF Formula: 0.04SKILL_USED_CURRENT_ROUND*B_DEF Formula: 0 Attacks 1 enemy. Increases this Champion's DEF by 4% each time this Skill is used. Stacks up to 20%.	Chest Thump Has a 75% chance of placing a [Provoke] debuff on all enemies for 1 turn. Places a [Counterattack] buff on this Champion for 2 turns. Cooldown: 4 Counterattack Provoke	Iron Hide [P] Formula: -0.5*DMG_MUL Has a 25% chance of decreasing damage inflicted on this Champion by 50% each time this Champion is attacked.	-