Encantamiento
Siempre que se coloque un contador -1/-1 sobre una criatura, puedes poner en juego una ficha de criatura Guerrero Elfo verde 1/1.
This ability triggers both when a -1/-1 counter is put on a creature on the battlefield and when a creature enters the battlefield with a -1/-1 counter on it. This includes when a creature returns to the battlefield as a result of persist.