Sathril, Animator Of Bones

{b}{g} create a black 1/1 skeleton token,
{g} until end of turn If an effect would create one
or more tokens under your control,
it creates twice that many of those tokens instead.
Skeletons you control have {t}{b/g}{b/g}{b/g} Sacrifice this
creature return target permanent from a
graveyard onto the battlefield under your control,