Sulvu, Molten Magi

+2: Untap target creature you control. If it is red, deal 1 damage to another target creature. If it is green, draw a card, then discard a card.
-4: Return target land or creature from your graveyard to your hand.
-X: Exile up to X cards from target graveyard. For each land or creature card exiled this way, create a red 2/2 elemental creature token.