Vasal of the Seal vs Cardiel

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Vasal of the Seal	Demonspawn	Force	HP	Legendary	HP 33% Place: All battles
Cardiel	The Sacred Order	Void	Support	Legendary	Speed 19% Place: All battles

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
Cardiel	60	6	19650 -1665	1013 +143	1255 -33	106 +8	15	50	50 +10	0 -20

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.]
Cardiel	Cow the Wicked Formula: 4ATK Formula: 0.075TRG_HP Attacks 1 enemy. Heals all allies by 7.5% of their MAX HP. Also places a [True Fear] debuff for 1 turn if the target is a Champion from the Demonspawn, Undead Hordes, or Knights Revenant Factions. True Fear	Angelsong Removes all debuffs from all allies, then places a [Block Debuffs] buff and a [Revive On Death] buff on all allies for 2 turns. The [Revive On Death] buffs cannot be removed. Cooldown: 4 Revive On Death Block Debuffs	Heavenly Host Places a 30% [Increase C. RATE] buff and a 30% [Increase C. DMG] buff on all allies for 2 turns, then teams up with all allies to attack a target enemy. Decreases the cooldown of this skill by 1 turn if an enemy is killed from this attack. Cooldown: 6 Increase C. DMG Increase C. RATE 30%	Fiend Warden [P] Formula: -0.2*DMG_MUL Formula: 1/relationChance Allies receive 20% less damage from Champions from the Demonspawn, Undead Hordes, or Knights Revenant Factions. Whenever an ally attacks, has a 15% chance to team up with them and join their attack. This Champion will attack with their default skill. Always joins Sicia Flametongue's attacks if they are on the same team. Can only join an ally's attack once per turn. Cardiel will not team up on ally attacks when they counterattack or when teaming up to attack with another Champion.