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 Phyrexian Altar by sacrificing any other modified creature you control with power one or greater, adding one mana of any color.
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.