You control at least one other modified creature with power one or greater.
Bloodspore Thrinax has at least one +1/+1 counter on it.
Steps
Activate Ashnod's Altar by sacrificing any other modified creature you control with power one or greater, adding ({C} magic symbol) ({C} magic symbol) .
One with the Kami triggers, creating a number of 1/1 Spirit creature tokens equal to the sacrificed creature's power that each enter with at least one +1/+1 counter on it.