Thylessia vs Bystophus

Overall comparison

HERO	Fraction	Element	Type	Rarity
Thylessia	Knight Revenant	Force	Attack	Epic
Bystophus	Knight Revenant	Force	Attack	Legendary

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Thylessia	60	6	12720	1454	1002	97	15	60	30	0
Bystophus	60	6	14700 +1980	1795 +341	804 -198	100 +3	15	63 +3	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
Bystophus	Horror Formula: 3.3*ATK Attacks 1 enemy. Has a 50% chance of placing a [Block Active Skills] debuff for 1 turn. Has a 35% chance of placing a [True Fear] debuff for 1 turn on targets under [Block Active Skills] debuffs. True Fear Block Cooldown Skills	Shadow Strike Formula: 3.2ATK Formula: DEALT_DMG0.2 Attacks all enemies. Inflicts a critical hit against targets under [Block Active Skills] debuffs. Heals by 20% of the damage inflicted. Cooldown: 4	Crumble Formula: 3.2*ATK Attacks all enemies. Has a 75% chance of placing a [Block Active Skills] debuff for 2 turns. Also has a 75% chance of placing a 60% [Decrease DEF] debuff for 2 turns. Cooldown: 4 Block Cooldown Skills Decrease DEF 60%	-