Onslaught

Callous Oppressor

You may choose not to untap Callous Oppressor during your untap step.
As Callous Oppressor comes into play, an opponent chooses a creature type.
oc
T: Gain control of target creature that isn't of the chosen type as long as Callous Oppressor remains tapped.

You may choose not to untap Callous Oppressor during your untap step.
As Callous Oppressor enters, an opponent chooses a creature type.
{T}: Gain control of target creature that isn't of the chosen type for as long as Callous Oppressor remains tapped.