Dark Athel vs Vasal of the Seal

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Dark Athel	Undead Hordes	Magic	Attack	Epic	Attack 20% Place: All battles
Vasal of the Seal	Demonspawn	Force	HP	Legendary	HP 33% Place: All battles

Stats comparison

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Dark Athel	60	6	13710	1465	925	100	15	57	30	0
Vasal of the Seal	60	6	21315 +7605	870 -595	1288 +363	98 -2	15	50 -7	40 +10	20 +20

Skills comparison

Dark Athel	Profane Glaive Formula: 1.6*ATK Attacks 1 enemy 2 times. Has a 40% chance of placing a 60% [Decrease DEF] debuff for 2 turns. Decrease DEF 60%	Blades of Blood Formula: 3.6*ATK Attacks all enemies. Has a 50% chance of placing a 30% [Decrease SPD] debuff for 2 turns. Cooldown: 5 Decrease SPD 30%	Harvest of Despair Formula: 3.65ATK Formula: 0.5TRG_HP Attacks all enemies. Places a 30% [Increase SPD] buff on this Champion for 3 turns if this attack kills 4 or more enemies. Heals this Champion by 50% of their MAX HP if this attack kills 6 or more enemies. Grants an Extra Turn if this attack kills 10 or more enemies. Cooldown: 5 Increase SPD 30%	-
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.]