dragon lord

{10}{w}{u}{b}{r}{g}{t} take all dragon cards from the Battlefield, graveyard, or libraries, then take that amount of other cards equal to that amount to mutate. The rest of the cards go back to their owners libraries.
{1}{r}{t} Lightning bolt: deal 3 damage to any target.
{1}{w}{u}{b}{r}{g}{t} untap all lands in play, play a second land.
{b}{b}{t} put target creature card from your graveyard onto the battlefield
{1}{r}{g}{t} create a 1/1 green elemental creature token.