Color Roulette

During each players draw step that player
draws a card from the multicolored and
mana pile, then discards one of those cards.
(this replaces ,,drawing a card'' in draw step)
Multic. and colorless spells cost {1} less to cast.
During e.p. upkeep that player may discard a multic. or colorless nonland card to destroy C.R.