Ancestral Blade is a uncommon Artifact — Equipment card from Core Set 2020 (M20), collector number 3. Current market price: $0.13 (foil $0.38), TCGplayer market prices via Scryfall.
When this Equipment enters, create a 1/1 white Soldier creature token, then attach this Equipment to it. Equipped creature gets +1/+1. Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)