Gravechill Killer vs Quargan the Crowned

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Gravechill Killer	Undead Hordes	Magic	Attack	Rare	-
Quargan the Crowned	Lizardmen	Spirit	Support	Epic	-

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
Quargan the Crowned	60	6	17670 +4125	903 -330	1222 +330	103 +7	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%
Quargan the Crowned	Nature's Cycle Formula: 4*ATK Attacks 1 enemy. Has a 30% chance of increasing the duration of a random buff on a random ally by 1 turn.	Overgrowth Formula: 0.15*TRG_HP Heals all allies by 15% of their MAX HP and places a [Shield] buff equal to 15% of their MAX HP on all allies for 2 turns. Cooldown: 4 Shield	Attunement Formula: 0 Places a [Perfect Veil] buff and a 50% [Increase ATK] buff for 2 turns on all allies whose ATK is higher than their DEF. Places a [Block debuffs] buff for 1 turn and a 60% [Increase DEF] buff for 2 turns and on all allies whose DEF is higher than their ATK. Cooldown: 6 Increase ATK 50% Block Debuffs Perfect Veil Increase DEF 60%