Departing Paths

Flip a Coin.
On heads, Exile a Creature you control at put three time counters on it, at the beginning of each upkeep remove a time counter, if you cannot, return the creature to the battlefield and put 3 +1/+1 counters on it.
On Tails, Sacrifice a Creature you control, then you may put a permanent from your hand onto the battlefield that costs three more than the converted mana cost of the creature.