Rift is the rune word 'HelKoLemGul' for polearms or scepters in Diablo II: Lord of Destruction. Rift is an odd weapon rune word that features absolutely no increase to physical damage, but instead adds a lot of elemental damage, and the ability to spray frozen orbs and tornadoes all over the place (if the character can attack fast enough). It may not qualify for the best weapon in terms of sheer damage, but it's certainly one of the most entertaining weapons in the game.