Enormous Energy Blade is a uncommon Artifact — Equipment card from Kamigawa: Neon Dynasty (NEO), collector number 96. Current market price: $0.17 (foil $0.16), TCGplayer market prices via Scryfall.
Equipped creature gets +4/+0. Whenever this Equipment becomes attached to a creature, tap that creature. Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)