Ori, Scion of Light

Lifelink

Other Spirits you control get +1/+1
Whenever you attack, you gain X Life, where X is the total power of Spirits you control
At the beginning of your end step, if you gained 5 or more life this turn, put a +1/+1 counter on each Spirit you control
{t},Pay X Life, where X is your current Life total: Create X 1/1 white and blue Spirit creature tokens, where X is the amount of life paid. You can't lose the game until your next end step