War Mother vs Gravechill Killer

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
War Mother	Ogryn Tribes	Magic	Attack	Legendary	Accuracy 65 Place: Crypts
Gravechill Killer	Undead Hordes	Magic	Attack	Rare	-

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
War Mother	60	6	17505	1509	903	99	15	63	30	10
Gravechill Killer	60	6	13545 -3960	1233 -276	892 -11	96 -3	15	50 -13	30	10

War Mother	Cry Havoc Formula: 1.9*ATK Attacks 1 enemy 2 times. Each hit places a 50% [Decrease ATK] debuff for 2 turns. Decrease ATK 50%	Special Brew Formula: 4.25*ATK Attacks all enemies. Places two [Bomb] debuffs that detonate after 2 turns. Bomb damage increases by 100% against Bosses. Cooldown: 4 Bomb	Mother's Touch Formula: 4.5*ATK Attacks all enemies. Instantly detonates all [Bomb] debuffs if this Champion is under an [Increase ATK] buff. Cooldown: 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%