Obsidian Battle-Axe is a uncommon Kindred Artifact — Warrior Equipment card from Morningtide (MOR), collector number 144. Current market price: $0.46 (foil $3.15), TCGplayer market prices via Scryfall.
Equipped creature gets +2/+1 and has haste. Whenever a Warrior creature enters, you may attach this Equipment to it. Equip {3}