Tormod, Chosen by the Crypt

At the beginning of each player's end step, that
player mills two cards. Then, choose up to one
card that player milled this turn and exile it. You
gain life equal to the number of cards exiled with Tormod this way.
{2}, {t}, Sacrifice another creature: Transform
Tormod, Chosen by the Crypt for the rest of the
game and return it to its owner's hand. Activate
only if you exiled a Dragon card with Tormod.