Until end of turn, whenever a monocolored permanent card is put into your library from a library, if you have 19 or more life, damage dealt by green creatures can’t be prevented until end of turn.
Harvest Oil {3RR} |Sorcery| Until end of turn, whenever a monocolored permanent card is put into your library from a library, if you have 19 or more life, damage dealt by green creatures can’t be prevented until end of turn.