Cosmic Strand

The Cosmic Strand is a crafted legendary Source for the  in Diablo III. It requires character level 70 to be worn. Its level 50 equivalent is Singularity.

This Source is famous for enhancing the spell, adding a Wormhole rune to any other (except Reversal; Reversal will be suppressed). As of patch 2.3.0, it works with Archon Teleport spell as well.

Despite the Game Guide stating that it has +9 random magic properties, it actually has +5, to a total of six, like any other Source.

Crafting
To craft it, one would need Plan: Cosmic Strand, 64000 gold, 20 Reusable Parts, 20 Arcane Dust, 30 Veiled Crystals, Khanduran Rune and Arreat War Tapestry.

Prior to patch 2.0.6, it also required a piece of Glowing Ore, which only dropped from unique Primordial Scavengers.