Vizier Ovelis vs Bivald of the Thorn

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Vizier Ovelis	Dark Elves	Force	Attack	Legendary	Attack 34% Place: Dungeons
Bivald of the Thorn	The Sacred Order	Spirit	HP	Legendary	HP 28% Place: All battles

Stats comparison

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Vizier Ovelis	60	6	16350	1476	1013	101	15	63	40	0
Bivald of the Thorn	60	6	22470 +6120	903 -573	1178 +165	98 -3	15	50 -13	50 +10	10 +10

Skills comparison

Vizier Ovelis	Accursed Blades Formula: 1.3*ATK Attacks 1 enemy 3 times. Each hit has a 35% chance of increasing the duration of all debuffs by 1 turn.	Master of Misery Formula: 2.7*ATK Attacks 1 enemy 2 times. Each hit has a 50% chance of placing a [Block Buffs] debuff, a 50% [Decrease ATK] debuff, and a 100% [Heal Reduction] debuff for 2 turns. Cooldown: 4 Block Buffs Heal Reduction 100% Decrease ATK 50%	Vizier of Poisons Formula: 6.6*ATK Attacks 1 enemy. Applies a [Debuff Spread] effect, taking 2 random debuffs from the target and placing them on all enemies. Places a [Perfect Veil] buff on this Champion for 3 turns if the target is under 2 or more debuffs. Cooldown: 5 Perfect Veil	Unseen Assassin [P] Places a [Perfect Veil] buff on this Champion for 2 turns at the start of each Round. Perfect Veil
Bivald of the Thorn	Thorn Maul Formula: 0.25HP Formula: 0.15DEALT_DMG Attacks 1 enemy. Has a 30% chance of placing a [Provoke] debuff for 1 turn. Also heals the ally with the lowest HP by 15% of the damage inflicted. The [Provoke] debuff can be placed even if this attack lands as a weak hit. Provoke	Admonition of Barbs Formula: 0.15HP Formula: 0.15HP Attacks all enemies 2 times. The first hit has a 75% chance of placing a [Provoke] debuff for 1 turn. The second hit has a 75% chance of placing a [Leech] debuff for 2 turns. Also places a 25% [Strengthen] buff on this Champion for 2 turns. The [Leech] and [Provoke] debuffs can be placed even if this attack lands as weak hits. Cooldown: 4 Leech Strengthen Provoke	Briar Nexus Formula: 0.25HP(1+0.05TRG_DEBUFF_COUNT) Formula: 0.2DEALT_DMG Attacks all enemies. Damage increases by 5% for each debuff on each enemy. Also heals all allies by 20% of the damage inflicted and places a [Shield] buff on them for 2 turns equal to 20% of the damage inflicted. Cooldown: 5 Shield	Dethorned [P] Formula: -0.15*DMG_MUL Decreases the damage taken by all allies from enemies under [Provoke] debuffs by 15%.