Demon in Pain

{r}{t}: Demon in Pain becomes a 4/5 and it's name becomes Demon from Below.
{r}{r}{t}: If this card is named Demon from Below, Demon from Below becomes a 5/6 and it's name becomes The Demon Prince.

{t}: If this card is named Demon in Pain, deal 3 damage to target creature or player. If this card is named Demon from Below, deal 5 damage to target creature or player. If this card is named The Demon Prince, deal 7 damage to up to 3 target creatures or players.