Thorn Behemoth

{t}, Pay 1 life, Sacrifice Thorn Behemoth: Search
your library for a nonlegendary land card, put it
onto the battlefield, then shuffle your library.
{t}: Add {c}.
{2}: Until end of turn, Thorn Behemoth becomes
a 3/3 red and green Elemental creature with
first strike and trample. It's still a land.