[Executor]

Abysia troops are slow,
If you have earth magic use destruction in combination with archers.
Use Enarie for poison cloud.
Leech against Burning Ones if you have enough blood 1 mages.
Reverse communion with light of the northren star for soul slay.
luck+body etherial on Behemots or Hydras,
swarm to slow him down since you surly have more powerful mages, Enraes are possibly the best mages in the game.
Life after death + rigor mortis, if you feel a bit suicidal.
There are a number of thing you can use.