Vinrenn, Feather Lost

Flying, vigilance, haste
Red spells you cast cost {1} less to cast.
White spells you cast cost {1} less to cast.
When Vinrenn attacks, you may pay {x}{r}{w}.
If you do, deal X damage divided as you choose
among any number of targets. Tap each creature
dealt damage this way. Players dealt damage this
way can't cast noncreature spells this turn.