Gravechill Killer vs Battle Sister

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Gravechill Killer	Undead Hordes	Magic	Attack	Rare	-
Battle Sister	The Sacred Order	Magic	Attack	Uncommon	-

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Gravechill Killer	60	6	13545	1233	892	96	15	50	30	10
Battle Sister	60	6	14205 +660	1090 -143	716 -176	101 +5	15	50	30	0 -10

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%
Battle Sister	Sever Formula: 4.2ATK Formula: 0.1MAX_STAMINA Attacks 1 enemy. Decreases Turn Meter by 10% if this attack is critical.	Condemn Formula: 6.7*ATK Attacks 1 enemy. Has a 15% chance of removing 1 random buff from the target. This attack is always critical. Cooldown: 4	-