Scion of Shrill Song

Play with your hand revealed.
As long as two cards in your hand have the same
mana cost, Scion of Shrill Song isn't a creature.
Whenever Scion of Shrill Song enters the battlefield or attacks, add an amount of mana
equal to its power in any combination of colors.
Whenever you cast a spell, you may discard a
card, then draw a card.