Ominous Skys

At the beginning of your upkeep, exile the top card of your library. You may play it this turn.
If you do not, put it into your graveyard and create and Ice token.

At the beginning of your 1st main phase if you control ten or more snow permanents, sacrifice Ominous Skys. If you do, create Marit Lage Enraged, a legendary 20/20 black Avatar creature token with flying and haste.