Mithrala Lifebane vs Petrifya Rockroot

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Mithrala Lifebane	Dark Elves	Void	Support	Legendary	Accuracy 80 Place: All battles
Petrifya Rockroot	Demonspawn	Magic	Attack	Rare	Accuracy 30 Place: All battles

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
Petrifya Rockroot	60	6	13380 -6930	1288 +418	848 -506	99 -10	15	50	30	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
Petrifya Rockroot	Flint Hail Formula: 1.9*ATK Attacks 1 enemy 2 times. Each hit has a 20% chance of placing a 30% [Decrease DEF] debuff for 2 turns. If the target is under a [Poison Sensitivity] debuff placed by this Champion, each hit has a 20% chance of placing a 60% [Decrease DEF] debuff for 2 turns instead. Decrease DEF 60% Decrease DEF 30%	Desiccation Formula: 2ATK Formula: 2ATK Attacks all enemies 2 times. The first hit has a 75% chance of placing a 25% [Decrease ATK] debuff for 2 turns. The second hit has a 50% chance of placing a 5% [Poison] debuff for 2 turns. Cooldown: 4 Decrease ATK 25% Poison 5%	Rot Pulse Formula: 2.1*ATK Attacks 3 times at random. Each hit has a 25% chance of placing a 25% [Poison Sensitivity] debuff for 2 turns. If all hits land on the same target, also places a 5% [Poison] debuff for 2 turns. Cooldown: 5 Poison Sensitivity Poison 5%	-