Kyle, Prowling Predator

+1: Target creature you control gets +X/+0 and gains trample until end of turn, where X is the number of cards in your hand.
-3: Draw X cards, where X is the number of creatures that attacked this turn. Transform Kyle, Prowling Predator.
-6: You get an emblem with "Whenever an opponent casts a spell, you may draw a card and/or have this emblem deal 3 damage to that opponent."