Stack Size: 20Replaces the standard effect on a Shock Nova skill gem with rotating rift worms.Right click this item then left click a Shock Nova Gem to apply it.
Rift Worm Shock Nova Effect is an alternate skill effect for Shock NovaShock NovaSpell, AoE, Lightning, Nova
Cost: (12-23) Mana
Cast Time: 0.70 sec
Critical Strike Chance: 6.00%
Effectiveness of Added Damage: 120%
Radius: 26 / 14Requires Level 28Casts a ring of Lightning around you, followed by a larger Lightning nova. Each effect hits enemies caught in their area with Lightning Damage.Per 1% Quality:1Superior2Anomalous3Divergent2% increased Shock Duration on enemiesRing has 2% chance to Shock
Ring Shocks as if dealing 5% more Damage1% increased Lightning DamageDeals (34-371) to (102-1114) Lightning Damage
20% chance to Shock enemies
(20-39)% increased Effect of ShockPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.. 
It can be purchased in the shop for 100 points.
- Felipe_GGG (September 16, 2016). "New Microtransactions, Patch Notes and Manifesto". Official Path of Exile Forums. Retrieved September 16, 2016.