Zombification spell

It is basically a rage spell that cant affect already alive troops but it brings dead troops back to life and buffs them up damage doesn't increase but hitpoints get increased by 100 as the level of it increases the hitpoints of it increase by 25 on dead troops but so it isnt too OP for every level it hits it only has 6 it can bring back and every level it hits 2 more will add on and the max amount of troops you can bring to life is 18 and it fills up 2 slots in the spell factory so people dont make too many