I know this is not standard due to rotation, however this is fun
{primal surge} for a deck that is pure creatures and lands
Stop whenever due he "may" part of primal surge
Enjoy all the green devotion as everything resolves AFTER primal resolves all the way (read the ruling)
So enjoy the life gain from the theros centaur and other such devotional nonsense that follows...
Cool. I would probably use lots of ETB effects to make a whirlwind of effects that could win the game