Vasal of the Seal vs Gnishak Verminlord

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Vasal of the Seal	Demonspawn	Force	HP	Legendary	HP 33% Place: All battles
Gnishak Verminlord	Skinwalkers	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
Gnishak Verminlord	60	6	17175 -4140	1365 +495	1068 -220	105 +7	15	50	30 -10	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.]
Gnishak Verminlord	Pestilent Censer Formula: 1.2*ATK Attacks 3 times at random. Each hit has a 40% chance of placing a [Bomb] debuff for 2 turns. [Bomb] debuffs placed by this skill on enemies whose MAX HP is equal to or higher than 200,000 will deal double damage. Bomb	Verminlord's Command Formula: 4.6*ATK Attacks all enemies. Has a 75% chance of placing a 50% [Decrease ATK] debuff for 2 turns. Also has a 75% chance of decreasing the detonation countdown of all [Bomb] debuffs by 1 turn, and increasing the duration of all [Poison] debuffs by 1 turn. Cooldown: 4 Decrease ATK 50%	Unclean Banquet Formula: 4.5*ATK Attacks all enemies. Has a 75% chance of placing 2 [Bomb] debuffs on each target for 2 turns, then grants an Extra Turn. [Bomb] debuffs placed by this skill on enemies whose MAX HP is equal to or higher than 200,000 will deal double damage. Cooldown: 5 Bomb	Rat Plague [P] Every time a [Bomb] debuff placed by this Champion detonates or is removed, places two 5% [Poison] debuffs for 2 turns. These debuffs are protected. Poison 5%