Kosmos Starborn

Double Strike
When Kosmos Starborn deals combat damage to
a player, they reveal a card at random from their
hand;
If the revealed card is a non-land card, that card
costs {2} more to cast.
If an instant or card with flash has been revealed
twice by this effect, the controller of Kosmos
Starborn may pay {2}and cast that card for its
mana cost.