Sith Doppelganger

Stealth, Swift Strike
Mutate {2}{u/b} (You may play this card for its Mutate
cost, and when you do, place it on over or under a
Being card. The card on top has the abilities and effects
of the card underneath.)
Skinshift {2} (You can shift which card is on top in
this Mutate stack. The card on top still retains all abilities and effects of the cards under it. This ability
can be used on any player's turn.)