Xynthiar, the Hellfire

Flying, Vigilance, First Strike
When Xynthiar, the Hellfire enters the
battlefield, create three 1/1 red Elemental
creature tokens. They may be exchanged at any
time with a red creature from your graveyard.
When one red Elemental creature token dies,
target opponent loses life equal to half the
number of cards in their graveyard (rounded
up).