Tunnel Steward vs Avir the Alchemage

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Tunnel Steward	Dwarves	Spirit	Attack	Uncommon	-
Avir the Alchemage	Dwarves	Magic	Support	Rare	-

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Tunnel Steward	60	6	8925	1255	903	95	15	50	30	0
Avir the Alchemage	60	6	16680 +7755	881 -374	1035 +132	102 +7	15	50	30	10 +10

Tunnel Steward	Vermin Killer Formula: 3.2*ATK Attacks 1 enemy. Has a 25% chance of placing a 2.5% [Poison] debuff for 2 turns. Poison 2.5%	Intensify Formula: 5.5*ATK Attacks 1 enemy. Has a 50% chance of increasing the duration of 2 random debuffs on the target by 1 turn. Cooldown: 4	-
Avir the Alchemage	Flask of Vitreol Formula: 4.7*ATK Attacks 1 enemy. Has a 30% chance of placing a 5% [Poison] debuff for 2 turns. Poison 5%	Corroding Catalyst Formula: 4.2*ATK Attacks all enemies. Has a 50% chance of placing a 25% [Decrease ATK] debuff for 2 turns. Also places a 15% [Decrease SPD] debuff for 1 turn on targets under [Poison] debuffs. Cooldown: 4 Decrease ATK 25% Decrease SPD 15%	Vitalizing Potions Formula: 0.15MAX_STAMINA Formula: 0.15HP Fills the Turn Meters of all allies by 15% and heals all allies by 15% of this Champion’s MAX HP. Cooldown: 6