So they finally found out what that spear was? Last I read on it, it was noted as there being considerable discussions on the matter.It also mentions a special type of spear: the Gae Bolga (Belly Spear). This was a rare weapon reserved for the best warriors, a spear with a spiral drill on its head. Barbs pointing backwards hung from the head whose purpose was to rip out as much flesh as possible when one tried to remove the spear. We know that Celtic warriors had training to anally impale an opponent with this weapon, so this is a very gruesome attack. It does 3d6 damage, but I would move this up to 4d6 when used anally (probably the strangest sentence I've ever written on the Pub!).
And how does the special attack works given an enemy that's facing you?