Bovine Bardiche is a legendary polearm in Diablo III. It requires character level 31 to drop. The unique affix summons four halberd-wielding combat ghost cows who can tank and damage enemies for 15 seconds. The effect seems to have a 45 seconds cooldown, but the chance to summon is 100%. As of patch 2.3.0, one may transmute this weapon in Kanai's Cube (destroying it in process!) to open a one-time portal to Not The Cow Level.