Cascade

Cascade is the most prestigious normal legendary wand, with a minimum level of 98. It deals low damage of every Element, making it useful against enemies of any element; its raw damage bonus also adds on to any damage you might do.

Lore
"A great magical cataclysm at Mage Island brought on by a strange, seemingly disconnected series of events resulted in this wand absorbing nearly uncontrollably high levels of magic."

Trivia

 * As of the 1.14 Gavel Update, Cascade (along with Cluster, Tidebinder and Black) has replaced Ethereal as the highest-levelled non-quest Legendary Wand.