3 Eld's give you 1 Tir.in the order listed to the left. Only works for the most common Runes: El, Eld, Tir, Nef, Eth, Ith, Tal, Ral, Ortģ El's give you 1 Eld. Not only is the cube useful to transmute items, but it also serves as extra storage space. You will find the Horadric Cube in a chest on level 3 of the Halls of the Dead, while you are progressing through the Horadric Staff Quest in Act II.