Ahsoka, Agent Fulcrum

Double Strike
When this creature enters the battlefield, search
target players library for a creature card with
mana value 6 or less and exile it, then shuffle. If
you own that card, you may put it into your hand.
Otherwise, you may cast it this turn, and you may
spend mana as if it were any color to do so.
Other Rebels and Rogues you control get +1/+1.