Vasal of the Seal vs Thea the Tomb Angel

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Vasal of the Seal	Demonspawn	Force	HP	Legendary	HP 33% Place: All battles
Thea the Tomb Angel	Knight Revenant	Force	Attack	Legendary	Attack 30% 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
Thea the Tomb Angel	60	6	16020 -5295	1542 +672	969 -319	100 +2	15	63 +13	30 -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.]
Thea the Tomb Angel	Befoulment Formula: 2*ATK Attacks 2 times at random. Has a 75% chance of placing a [Hex] debuff for 5 turns. This debuff cannot be resisted. Each critical hit decreases the cooldown of the Not Of This World skill by 1 turn. Hex	Hexreaper Formula: 3.5ATK Formula: 0.5DMG_MUL*EnemyTeamAppliedEffectsTotalCountOfKind(Mark_KindId) Attacks all enemies. Damage increases by 50% for each [Hex] debuff on the enemy team. Stacks up to 300%. Cooldown: 5	Not Of This World Places a [Perfect Veil] buff on this Champion for 3 turns. Grants an Extra Turn. Cooldown: 5 Perfect Veil	Cruel Angel [P] Has a 50% chance of placing a [True Fear] debuff on all enemies for 1 turn when an enemy loses 30% or more of their MAX HP in a single hit. True Fear