Niv-Mizzet Reborn [War of the Spark]

Set: War of the Spark Type: Legendary Creature — Dragon Avatar Rarity: Mythic Cost: {W}{U}{B}{R}{G} FlyingWhen Niv-Mizzet Reborn enters the battlefield, reveal the top ten cards of your library. For each color pair, choose a card that's exactly those colors from among them. Put the chosen cards into your hand and the rest on the bottom of your library in a random order.