Verdant Touch

Sorcery    (CMC:2)

Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.) Target land becomes a 2/2 creature that's still a land. (This effect lasts indefinitely.)

203 TPR • ENM. W. Kaluta & DiTerlizzi

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Legal in: Tempest Block,Legacy,Vintage,Commander

Oracle Text (click to copy):

10/4/2004
The land is still a land and retains all its abilities, plus any other characteristics.
8/1/2008
A noncreature permanent that turns into a creature can attack, and its  abilities can be activated, only if its controller has continuously controlled that permanent since the beginning of his or her most recent turn. It doesn't matter how long the permanent has been a creature.