Otawara, Soaring City is a rare Legendary Land card from Kamigawa: Neon Dynasty Promos (PNEO), collector number 271p. Current market price: $33.05 (foil $36.45), TCGplayer market prices via Scryfall.
{T}: Add {U}. Channel — {3}{U}, Discard this card: Return target artifact, creature, enchantment, or planeswalker to its owner's hand. This ability costs {1} less to activate for each legendary creature you control.