Thylessia vs Gravechill Killer

Overall comparison

HERO	Fraction	Element	Type	Rarity
Thylessia	Knight Revenant	Force	Attack	Epic
Gravechill Killer	Undead Hordes	Magic	Attack	Rare

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Thylessia	60	6	12720	1454	1002	97	15	60	30	0
Gravechill Killer	60	6	13545 +825	1233 -221	892 -110	96 -1	15	50 -10	30	10 +10

Thylessia	Weft of Madness Formula: 3.5*ATK Attacks 1 enemy. Has a 50% chance of applying a [Debuff Spread] effect, taking 1 random debuff from the target and placing it on all enemies under [Hex] debuffs.	Shrieking Voices Formula: 3.7*ATK Attacks all enemies. Increases the duration of all debuffs on all enemies by 1 turn. Cooldown: 3	Melancholia Formula: 3.7*ATK Attacks all enemies. Places a 60% [Decrease DEF] debuff for 2 turns. Cooldown: 4 Decrease DEF 60%	Feast of Woe [P] When attacking enemies under [Decrease DEF] debuffs, has a 50% chance of placing a [Hex] debuff on them for 2 turns. Hex
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%	-