The Infinity Rune Word is created using Ber+Mal+Ber+Ist in that order. It requires level 63 to use and can be made using a 4 socket Normal/Superior quality Polearm. As of 2.4, Spears and Amazon spears can be used.(Note – Magic(Blue)Rare(Yellow)Set(Green), and Unique(Brown) items cannot be used as bases for Rune Words.)