Merwin, Scar of the Future

Flying, Devour, Trample, Mentor all ur creatures
• When this card dies, return to it's owner's hand.
•{9} : double this card's power until end of turn.
•If your Devotion to G,U, or R is > 5: you may {t} this card: Deal damage = this card's power divided as you choose among artifacts and enchantments, if you deal damage to them = to their cmc, they are destroyed. Use this only as a sorcery.
{bull} After the Devour resolves, create X red Mercenary tokens = Merwin's toughness