Chewbacca, Porg Protector

+4: Create 3 1/1 white Porg Jedi creature tokens. One target creature loses all creature types and becomes a porg
-3: Make a copy of each porg you control. Up to one target porg loses all abilities and creature types and becomes a 0/1 black zombie.
+12: Tap all non-porg creatures, Porgs you control get +10/+10 and trample until end of turn.