结界
每当在任一生物上放置一个-1/-1指示物时,你可以将一个1/1绿色的地精/战士衍生物放置进场。
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.