Kakushi-dōri

Hideaway {t}, Add {c}. {2}, {t}: You may play the exiled card without paying its mana cost during your Combat Phase after Blockers have been declared; if it’s a creature, it enters tapped and attacking. If it’s a spell, you may cast it with the same rules.{flavor}Many of these hidden passages around Kamigawa. If you find one elsewhere, you won’t be able to tell anyone.