Frozen Banshee vs Vasal of the Seal

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Frozen Banshee	Undead Hordes	Magic	Attack	Rare	Accuracy 35 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
Frozen Banshee	60	6	14700	1046	1002	99	15	50	30	10
Vasal of the Seal	60	6	21315 +6615	870 -176	1288 +286	98 -1	15	50	40 +10	20 +10

Skills comparison

Frozen Banshee	Death's Caress Formula: 2.2*ATK Attacks 1 enemy 2 times. Each hit has an 80% chance of placing a 5% [Poison] debuff for 2 turns if the target is under a [Poison Sensitivity] debuff. Poison 5%	Cruel Exultation Formula: 6.5ATK Formula: (0.02MAX_STAMINA)*REL_TRG_DEBUFF_COUNT Attacks 1 enemy. Fills the Turn Meters of all allies by 2% for each debuff on the target. Cooldown: 4	Frost Blight Formula: 5*ATK Attacks 1 enemy. Places a 25% [Poison Sensitivity] debuff for 2 turns. Cooldown: 5 Poison Sensitivity	-
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.]