Takenuma, Abandoned Mire (Promo Pack) [Kamigawa: Neon Dynasty Promos]

{T}: Add {B}.
Channel — {3}{B}, Discard Takenuma, Abandoned Mire: Mill three cards, then return a creature or planeswalker card from your graveyard to your hand. This ability costs {1} less to activate for each legendary creature you control.