Niv-Mizzet, Ascended

: Whenever you cast another multicolored spell, you may draw a card.
+1: Look at the top X cards of your library where X is the number of colors among other permanents you control. Put them back in any order.
-7: Reveal the top ten cards of your library. Put all multicolored cards revealed this way into your hand, and the rest in your graveyard.