Bitterthorn, Nissa's Animus is a rare Legendary Artifact — Equipment card from March of the Machine Commander (MOC), collector number 45. Current market price: $5.79, TCGplayer market prices via Scryfall.
Living weapon (When this Equipment enters, create a 0/0 black Phyrexian Germ creature token, then attach this to it.) Equipped creature gets +1/+1. Whenever equipped creature attacks, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle. Equip {3}