Daenerys, Breaker of Chains

Sacrifice a land: Create two 1/1 red and white
Soldier creature tokens with lifelink and haste.
Whenever one or more creatures you control
deal combat damage to a player, reveal cards
from the top of your library until you reveal a
land card. Put it into play tapped and the rest on
the bottom of your library in a random order.
{r}{w}{b}: Search your library for a Dragon creature
and put it on top of your library.