Sumitra, Sphinx's Apprentice

As an additional cost to cast Sumitra, Sphinx's Apprentice, reveal your hand or pay {5}.
{t}: Exile a card from your hand face-down. Target opponent guesses the name of that card.
If correct, that player draws 2 cards and gains 2 life. Otherwise, you may play that card without paying it's mana cost until end of turn.
"Why do corvids resemble bureaus?"