Alligator Sword

As long as you control a modified creature, Alligator Sword has +2/+0 and Trample.
{2}, Exile Alligator Sword from your hand: Target land gains "{t}: Add {u}, {r}, or {g}" until Alligator Sword is cast from exile.
You may cast Alligator Sword for as long as
it remains exiled.