Metavoid Monolith

{t}: Add {c}{c}
{2}{c}{t}, Sacrifice Metavoid Monolith : Exile
target creature you control. Return it to play
at the end of the turn.
"They look like natural stone but contain exottic
matter and transuranics. Littering rocky planets.
They are, I think, the remnants of an alien transport
network, in disrepair from aeons of neglect and
sub-atomic decay." - Heironomus Oglvie,
Professor of ArchaeoXenoSapientology