Chaos Emerald

{2}{w}{w}{u}{b}{r}{g}{g}{t}Chaos Emerald and 6 other
cards named Chaos Emerald: Up to 3 target
creatures gain Indestructible, Flying, Trample,
Hexproof, and Double Strike until the end of
your next combat phase. Destroy target artifact.
You can have any amount of cards named Chaos Emerald in your deck.
{t}: Add one of any color mana to your mana
pool.