Infinity is the rune word 'BerMalBerIst' for polearms in Diablo II: Lord of Destruction. The Conviction aura provided by Infinity maximizes the effects of the high-level Chain Lightning that the weapon produces. For nearly every character that deals elemental damage, this is the best mercenary weapon since it actively reduces resistances, vastly increasing the damage output of the character. Only builds that deal magic damage, poison damage or physical damage do not receive significant benefit from the Conviction aura on this weapon.