Mother Superior vs Gravechill Killer

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Mother Superior	The Sacred Order	Spirit	Support	Rare	Speed 13% Place: All battles
Gravechill Killer	Undead Hordes	Magic	Attack	Rare	-

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Mother Superior	60	6	16350	991	947	103	15	50	30	0
Gravechill Killer	60	6	13545 -2805	1233 +242	892 -55	96 -7	15	50	30	10 +10

Mother Superior	Lightning Sanction Formula: 3.5*ATK Attacks 1 enemy. Has a 35% chance of placing a 25% [Decrease ATK] debuff for 2 turns. Decrease ATK 25%	Fill With Blessing Formula: 0.3*HP Heals an ally by 30% of this Champion’s MAX HP. Places a [Shield] buff equal to any surplus heal for 2 turns if the target is fully healed by this Skill. Cooldown: 4 Shield	Brim With Life Places a 7.5% [Continuous Heal] buff on all allies for 2 turns. Places a [Shield] buff equal to 10% of the target’s HP on all allies for 2 turns If an ally’s HP is full. Cooldown: 5 Shield Continuous Heal 7.5%
Gravechill Killer	Freezing Toxin Formula: 3.9*ATK Attacks 1 enemy. Has a 40% chance of placing a 5% [Poison] debuff for 1 turn. Poison 5%	Blood Chill Formula: 6.8*ATK Attacks 1 enemy. Has a 75% chance of placing a 30% [Decrease DEF] debuff for 2 turns. Has a 75% chance of placing a 60% [Decrease DEF] debuff instead if the target is under a [Poison] debuff. Cooldown: 4 Decrease DEF 60% Decrease DEF 30%	Icy Veins Formula: 2.65*ATK Attacks 1 enemy 2 times.Each hit places a 2.5% [Poison] debuff for 2 turns. Places a 5% [Poison] debuff instead if the target is under a [Poison Sensitivity] debuff. Cooldown: 5 Poison 2.5% Poison 5%