Tara, Fist of Stone

Haste
Land creatures you control have undying. (When
a land creature you control dies, if it had no +1/+1
counters on it, return it to the battlefield under its
owner's control with a +1/+1 counter on it.)
At the beginning of each combat, untap target
land. It becomes a 3/3 Elemental creature with
haste until end of turn.