Tempest, Ruler of Storm

You may cast or return Tempest to the battlefield
by exiling 2 white and/or Dragon cards from your
hand or graveyard.
{t} Pay {w}, Return Tempest to your hand.
You may discard this card and 1 white Creature
to the Graveyard, then search your library
for a dragon and put that card into your hand.
You may exile this card, then search your library
for a white dragon reveal it and put that card
into your hand.