Necromancer Spell Help

[Rare_Yeoman]

I've been working on a necromancer character that has an ability to create abominations. The necromancer gets corpses like a meatwagon and doing so cause an integer variable to increase by one. casting the create abomination spell summons a different creature based on how big the integer is. I need a way to make the necromancer get rid of the corpses he is carrying when the spell is cast. Right now I have it so that he just drops them all, but because he also has a raise dead ability, this is not enough; the corpses can't be there. If anyone could help with this, it would be much appreciated.

+rep to anyone who helps