Vasal of the Seal vs Witness

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Vasal of the Seal	Demonspawn	Force	HP	Legendary	HP 33% Place: All battles
Witness	The Sacred Order	Magic	Support	Rare	Resist 30 Place: Crypts

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
Witness	60	6	14865 -6450	1134 +264	903 -385	103 +5	15	50	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.]
Witness	Long Shot Formula: 3.4ATK Formula: 3.4ATK Attacks 1 enemy. Has a 15% chance of placing an extra hit.	Support Fire Formula: 4.3*ATK Attacks 1 enemy. Places a 30% [Increase DEF] buff on the ally with the lowest HP for 3 turns. Cooldown: 4 Increase DEF 30%	Prayer of Comfort Places a [Block Debuffs] buff on all allies for 1 turn. Places a [Shield] buff equal to 30% of this Champion's MAX HP on all allies for 2 turns. Cooldown: 6 Shield Block Debuffs	-