{R} Bedlam Reveler [Eldritch Moon Prerelease Promos][PR EMN 118]

This spell costs {1} less to cast for each instant and sorcery card in your graveyard.
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
When this creature enters, discard your hand, then draw three cards.