Ocelot, the Writhing One

If Ocelot, the Writhing One is your commander, your main deck may contain shapeshifter spells of any color.
Shapeshifter spells you control have devoid.
At the beginning of combat on your turn, you may have each other shapeshifter you control become a copy of target creature an opponent controls until your next end step.
"I. Am. All."