Decomon of Portals

+3: Put two -1/-1 counters on up to one target creature. If you chose a creature you control, it gets +4/+4 and menace until end of turn.
+1: Put a portal card from your hand and remove a loyalty counters from Decomon of Portals equal to it's colorless mana and 2 for colored mana.
-3X: (XXX)You get X 3/4 shades with flying, shadow and "This creature taps during your untap step and untaps can only attack when it's tapped."