Chokehold

Exile all Creatures currently in play. After your
next battle phase, restore all creatures exiled in
this way. If "Crystal Being (Inert)" Was Exiled
In this way, You may Search your Library for
"Crystal Being (Active)" And add it to your
hand, then shuffle your library. Then, when
"Crystal Being (Inert) Would Re-enter the
battlefield, you may pay the difference in
Mana cost to instead play "Crystal Being
(Active)" From your hand.