Orb of Dragonkind (PPAFR-157) - Adventures in the Forgotten Realms Promos

, : Add two mana in any combination of colors. Spend this mana only to cast Dragon spells or activate abilities of Dragons.
, , Sacrifice this artifact: Look at the top seven cards of your library. You may reveal a Dragon card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.