Dark Kael vs Avir the Alchemage

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Dark Kael	Dark Elves	Magic	Attack	Epic	-
Avir the Alchemage	Dwarves	Magic	Support	Rare	-

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Dark Kael	60	6	14205	1343	1013	96	15	50	30	15
Avir the Alchemage	60	6	16680 +2475	881 -462	1035 +22	102 +6	15	50	30	10 -5

Dark Kael	Weaver of Woes Formula: 1.35*ATK Attacks 1 enemy 3 times. Each hit has a 25% chance to instantly activate one tick of 2 [Poison] debuffs or 1 [Poison] debuff and 1 [HP Burn] debuffs.	Binding Darkness Formula: 4*ATK Attacks all enemies. Has a 75% chance of placing a 50% [Decrease ATK] debuff for 2 turns. Each critical hit also has a 75% chance of increasing the duration of all debuffs on the target by 1 turn. Cooldown: 4 Decrease ATK 50%	Reality Acid Has a 75% chance of placing three 5% [Poison] debuffs and a 25% [Poison Sensitivity] debuff on the target for 2 turns. Cooldown: 4 Poison Sensitivity Poison 5%	Delerium [P] Formula: -0.15 Decreases the C. RATE of enemies under 2 or more [Poison] debuffs by 15%. If there are multiple Champions on the team with this skill, only one will activate. This skill will not activate on duplicate copies of this Champion, if this particular Champion is dead.
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	-