Walking Skyscraper is a uncommon Artifact Creature — Construct card from Kamigawa: Neon Dynasty (NEO), collector number 263. Current market price: $0.17 (foil $0.33), TCGplayer market prices via Scryfall.
This spell costs {1} less to cast for each modified creature you control. (Equipment, Auras you control, and counters are modifications.) Trample This creature has hexproof as long as it's untapped. (It can't be the target of spells or abilities your opponents control.)