I guess I didn't explain the card well. It's effect activates at the end of the turn, when the creature attacks (damage or no damage), not on summon. Permafrost activates when creatures attack it, this activates when it attacks the opponent.
My main combo was this + adrenaline, maybe mitosis if you wanted to, but I feel that owuld be slow. I wanted this to be a good addition to the life rush, as it has 3 attack and a low cost.