Elesh Norn's Beast Caller

Elesh Norn's Beast Caller enters the battlefield
with X oil counters on it.
Whenever a nontoken creature you control dies,
exile it, then proliferate.
{p/b}, {t}: Create a X/X Phyrexian Artifact Beast
token, where X is Elesh Norn's Beast Caller's
power, activate only as sorcery.
{p/r}, {ut}, remove X oil counters from Elesh
Norn's Beast Caller: put X +1/+1 counters on it.