Doomskar (4)
Destroy all creatures.
Foretell (During your turn, you may pay and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)
Whenever you cast your second spell each turn, you gain 2 life.
When Doomskar Titan enters the battlefield, creatures you control get +1/+0 and gain haste until end of turn.
Backup 1
Trample
Whenever this creature deals combat damage to a player or battle, look at that many cards from the top of your library. You may reveal a creature or land card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.
Gatherer works better in the Companion app!
(During your turn, you may pay 
and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)