Phyrexian Trapper

When Phyrexian Trapper enters the battlefield,
exile target creature an opponent controls.
At the beginning of your upkeep, put an oil
counter on Phyrexian Trapper.
At the beginning of your endstep, if Phyrexian
Trapper has three or more oil counters, put the
exiled creature onto the battlefield under your
control. It's a phyrexian in addition to it's other
types.