Cool idea

Chromatic(this card counts as all 5 colors)
Whenever you cast a multicolored spell choose all that apply,
-if that spell was white create a 1/1 human token.
-if that spell was blue draw a card then discard a card.
-if that spell was black target player mills a card.
-if that spell was red deal 2 damage to any target.
-if that spell was green untap target land you control.
-if that spell had no colors each opponent may cast a spell from their hand without paying its mana cost.