Devourer of the Ancient

Vigilance, trample, reach
Whenever you cast an Insect spell, put a carapace counter and 2 spine counters on Devourer of the Ancient.
Devourer of the Ancient gets +1/+0 for each spine counter on it and +0/+1 for each carapace counter on it.
Remove a carapace counter and a spine counter: Destroy target creature that blocked Devourer of the Ancient this turn.