Vasal of the Seal vs Wyrennon the Silken

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Vasal of the Seal	Demonspawn	Force	HP	Legendary	HP 33% Place: All battles
Wyrennon the Silken	Sylvan Watchers	Spirit	Support	Epic	Speed 20% 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
Wyrennon the Silken	60	6	17835 -3480	848 -22	1266 -22	104 +6	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.]
Wyrennon the Silken	Silken Spontoon Formula: 4.2*ATK Attacks 1 enemy. Has a 40% chance of placing a 50% [Decrease ATK] debuff for 2 turns. Decrease ATK 50%	Glide Steps Formula: 0.15*MAX_STAMINA Fills the Turn Meters of all allies by 15%. Also places a 30% [Increase SPD] buff on all allies for 2 turns. Cooldown: 6 Increase SPD 30%	Grace of Immortals Formula: 0.5TRG_HP Formula: 0.3MAX_STAMINA Revives a dead ally with 50% HP and 30% Turn Meter. Also places a 15% [Continuous Heal] buff on that ally for 2 turns. Cooldown: 7 Continuous Heal 15%	-