Ahri

First Strike, Dash {4}
Sweep - Return any number of basic lands you
control to their owner's hand; Depending on the number returned, I gain all of the following:
1-2: Trample
3-4: Lifelink
5-6: Deathtouch
Limit Break (Transform me when conditions are met.
I keep all counters when flipped.) You have
returned 6 lands to your hand before the end of
your next combat.