I think you meant Abhorath 
Agree he’s rubbish, certainly by the end game.
My suggestions were here: Troop Buff A-H Thread With Summary, and I paste in again:
⦿ Rebalance his base stats with -10 to Armour and +10 to Life, or some such
⦿ Replace Arcane trait with Regeneration or even Invigorated
⦿ Rework spell to: gain Life and Attack, scaling with Magic/2, cleanse self and heal to full, and remove all gems from the board, for 14 mana
⦿ Replace third trait with: Fell Fury: create a random Skull on the board when you match 4+ gems