Mordai’s Oil

All your permanents gain the Artifact subtype.
All mana simbols in your permanents gain the {p/c} phyrexian subtype.
Planeswalker Mordai acquired the improved
version of the Phyrexian Glistening Oil from his counterpart of an alternate timeline, where
Ravnica has been ravaged by a terrible war and its
ruins were ruled by a chronotyrant.