Lluwen, Exchange Student

Lluwen enters prepared. (While it's prepared, you may cast a copy of its spell. Doing so unprepares it.) Exile a creature card from your graveyard: Lluwen becomes prepared. Activate only as a sorcery. Pest Friend (B/G) Create a 1/1 black and green Pest creature token with "Whenever this token attacks, you gain 1 life."