Vasal of the Seal vs Varl the Destroyer

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Vasal of the Seal	Demonspawn	Force	HP	Legendary	HP 33% Place: All battles
Varl the Destroyer	Orcs	Spirit	Attack	Legendary	-

Stats comparison

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Vasal of the Seal	60	6	21315	870	1288	98	15	50	40	20
Varl the Destroyer	60	6	15030 -6285	1476 +606	1101 -187	98	15	63 +13	30 -10	10 -10

Skills comparison

Vasal of the Seal	Abyssal Seal Formula: 0.25*HP Attacks 1 enemy. Places a [HP Burn] debuff on the target for 2 turns if they are under a [True Fear] debuff or a [Decrease ATK] debuff. Also places a [Shield] buff on this Champion for 2 turns equal to 10% of their MAX HP. Shield HP Burn	Infernal Darkness Formula: 0.27*HP Attacks all enemies. Has a 75% chance of placing a [True Fear] debuff and a 50% [Decrease ATK] debuff for 2 turns. Cooldown: 5 True Fear Decrease ATK 50%	Daemon Possession Balances the HP of all allies. The HP levels of all allies will be brought up to the level of the ally with the highest HP. After balancing HP, grants an Extra Turn. Cooldown: 6	Legion of Doom [P] Formula: -0.2DMG_MUL Formula: 0.2DMG_MUL Receives 20% less damage from Champions from the Banner Lord, High Elf, and Sacred Order Factions. If there are 2 or more Demonspawn Champions on the team alongside this Champion, increases the C. DMG of all Demonspawn Champions on the team by 20%. [C. DMG increase only works when this Champion is alive.]
Varl the Destroyer	Ravaging Leech Formula: 3.8ATK Formula: 0.3DEALT_DMG Attacks 1 enemy. Heals this Champion by 30% of the damage inflicted.	Lay Waste Formula: 4*ATK Attacks all enemies. Has a 75% chance of placing a 25% [Weaken] debuff for 2 turns. Also places a 50% [Decrease ATK] debuff for 2 turns on those enemies who receive a [Weaken] debuff. Cooldown: 4 Weaken 25% Decrease ATK 50%	Calamity Torrent Formula: 5.6ATK Formula: 0.5DEALT_DMG Attacks 1 enemy. Will ignore 30% of the target’s DEF. Destroys the target’s MAX HP by 50% of the damage inflicted. Places a [Block Damage] buff on this Champion for 1 turn if this attack kills an enemy. Cooldown: 5 Block Damage	Mass Murder [P] Formula: 0.1B_ATKCOOLDOWNABLE_SKILLS_USED_COUNT_CURRENT_ROUND Increases this Champion’s ATK by 10% each time they use an Active Skill (stacks up to 100%). Resets each round.