Light of the Valar

Other permanents you control have hexproof.
Whenever you cast a spell, if it was a creature
spell, you may gain life equal to that creature's
toughness. If a noncreature spell was cast this
way, create a 1/1 green Elf creature token.
At the beginning of your upkeep, if you control
no creatures, exile Light of the Valar and all
cards from all graveyards.