Briar, Reckless Gambler

Reckless: When Briar, Reckless Gambler attacks, select two cards at random from hand, and put them face down.
Target opponent chooses one card to exile. Then you may reveal the other card and play it free of cost.
Gamble: Pay 5 life - select a random card from exile, you may cast that card free of cost. If you don't put that card into its owners graveyard