The Mantis

Each nonland card in your hand without
foretell has foretell. Its foretell cost is equal
to its mana cost reduced by {2}.
(During your turn, you may pay {2} and exile
it from your hand face down. Cast it on a later
turn for its foretell cost )
Whenever you foretell a card The Mantis gets
+2/+0 until end of turn.