Rotting Mage vs Gravechill Killer

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Rotting Mage	Undead Hordes	Spirit	Support	Rare	Speed 13% Place: Crypts
Gravechill Killer	Undead Hordes	Magic	Attack	Rare	-

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Rotting Mage	60	6	16350	1068	870	100	15	50	30	15
Gravechill Killer	60	6	13545 -2805	1233 +165	892 +22	96 -4	15	50	30	10 -5

Rotting Mage	Gelid Beam Formula: 4*ATK Attacks 1 enemy. Has a 25% chance of placing a [Freeze] debuff for 1 turn. Freeze	Frost Armaments Places a 25% [Increase ATK] buff on all allies for 2 turns. Places a 30% [Increase DEF] buff on this Champion for 2 turns. Cooldown: 4 Increase ATK 25% Increase DEF 30%	Mental Overload Formula: 4.4*ATK Attacks 1 enemy. Has a 75% chance of placing a [Stun] debuff for 1 turn. Cooldown: 4 Stun
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%