Lluwen, Exchange Student (SOS-199) [Secrets of Strixhaven]

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: Luwen 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."