Mystic Tomato

Exorcism- Whenever one or more cards
leaves your graveyard, Mystic Tomato gains
+2/+2 until the end of the turn.
{2}, Exile Mystic Tomato from your hand: Target land gains "{t}: Add {b}, {u}, or {g}" until Mystic Tomato is cast from exile.
You may cast Mystic Tomato for as long as
it remains exiled.