Neeko, The Shapesplitter

Whenever you cast a creature card thats exactly 2 colors, put a +1/+1 counter on Neeko. Whenever you cast a creature card that's 3 or more colors, draw a card for every color after the second.

{3}{t}: Create a 0/5 creature token named 'Neeko's Afterimage' that has "This creature must be the target of all spells and abilities your opponents control" and "Exile this card at the beginning of your endstep". Activate only as a Sorcery