Pob links:

• https://pastebin.com/mHntMTTv

Vorte

Vortex is really a cold spell that explodes dealing harm in a location around the player and leaves a ground effect that chills (related to chilling ground) and offers cold harm over time
The Vortex consists of two parts: explosion and also a ground impact.
Stacking: If an enemy is standing more than numerous vortex ground effects, only the one with all the highest damage per second will lead to harm at any provided moment. This can be constant with other damage more than time ground effects, like acid cloud and burying ground.
Modifiers to Spell Damage apply to this skill's Harm More than Time Effect: Modifiers to spell harm only apply for the ground effect portion with the Skill and usually do not impact other sources of Damage more than time which may perhaps be utilized by the explosion, for example, poison, the Decay Help, or ignite from the Three Dragons.

Quest reward
This item is offered as a quest reward for the following quests:
Sever the appropriate Hand - Act 3 - Templar

Vendor reward
This item may be purchased at the listed NPC vendors following finishing the following quests:
A Fixture of Fate - Act 3 - Siosa 
Sever the appropriate Hand - Act 3 - Clarissa
Fallen from Grace - Act 6 - Lilly Roth

Alterations in Poe 3.5

Vortex is now Immediate, using a 1.8-second cooldown. It gains cooldown recovery speed as the gem levels, decreasing the cooldown to just over 1 second at level 20 of the gem should you have no other cooldown recovery speed modifiers. This unique behavior lets it perform as a standalone skill which you can cast when moving or by using it although also casting other cold spells. You could also use it as an instant slowing impact in any build!
The size on the ongoing Vortex impact has been elevated, and now matches the damaged location, generating it considerably simpler to catch significant groups of enemies inside the harm over time impact.
When casting even though you've got an active Frostbolt, it'll throw once again on 4 further Frostbolts, using a quick delay involving each repeat, letting it cover a vast region. It can be a handy clearing tool alongside a supported Frostbolt. With slower projectiles in your Frostbolt, it is possible to get a lot of hits on a tougher enemy whilst maintaining them slowed inside the Vortex effects.
Since from the compelling nature of those modifications, the skill location is now slightly smaller sized when casting on Frostbolts, such as its ongoing Vortex. The skill no longer has a harm bonus when throwing on Frostbolts.

Vortex Builds