What does Churning Reservoir do?
user
At the beginning of your upkeep, put an oil counter on another target nontoken artifact or creature you control.\n{2}, {T}: Create a 1/1 red Phyrexian Goblin creature token. Activate only if an oil counter was removed from a permanent you controlled this turn or a permanent with an oil counter on it was put into a graveyard this turn.
assistant