Trepanation Blade is a uncommon Artifact — Equipment card from Iconic Masters (IMA), collector number 231. Current market price: $0.32 (foil $0.49), TCGplayer market prices via Scryfall.
Whenever equipped creature attacks, defending player reveals cards from the top of their library until they reveal a land card. The creature gets +1/+0 until end of turn for each card revealed this way. That player puts the revealed cards into their graveyard. Equip {2}