Here is a small collection of ideas regarding the things mentioned in the topic… why? Because it would be cool to see updates to these things and Tal Rasha and Meteor need love, now that Etched Sigil was castrated.
Jang’s Envelopment [Legendary Belt]
Halves the cooldown of Black Hole and increases its area of effect by your pickup radius. A Black Hole pulls 3-5 Meteors of the same element from the sky.
The Smoldering Core [Legendary 2H Staff]
Removes the cooldown and resource costs from the Molten Impact rune of Meteor and triples its damage dealt. Your gold pickup radius increases the area of effect and you now gain a Meteor charge every 5 seconds, up to a maximum of 4-6 charges. Your cooldown reduction affects the recharge time.
Primordial Soul [Legendary Source]
Increases the damage bonus per stack of Elemental Exposure to 40-50%.
Orb of Infinite Depth [Legendary Source]
Explosive Blast deals 500-600% increased damage, Hitting an enemy with Explosive Blast increases your damage reduction by 20% for 6 seconds, stacking up to four times.
Cathan’s Guard [Legendary Shoulders] [NEW]
Attacking with Arcane, Cold, Fire or Lightning draws a Meteor of the same element from sky and Meteors other than Meteor Shower detonate a corresponding Explosive Blast on impact. Each damage type can pull a Meteor once every 6 seconds. This is susceptible to cooldown reduction effects.
…and finally the Tal Rasha set - as you can guess from the shoulders it will look a bit different, having auto-meteors removed:
Tal Rasha’s Elements
(2) piece bonus:
Arcane, Cold, Fire and Lightning attacks each grant a stack of Elemental Fury for 8 seconds. At 4 stacks, switching between different elemental attacks extends the duration by 2 seconds, up to a maximum of 12 seconds. Primary skills deal 50% more damage per stack of Elemental Fury, and attack 25% faster.
(4) piece bonus:
You take 15% less damage per stack of Elemental Fury.
(6) piece bonus:
Each stack of Elemental Fury increases all damage dealt by 3000% and reduces the cooldown time of Arcane Power spenders by 10%.
Please take all % figures with a grain of salt, as a base for discussion, and let me hear your toughts.
EDIT:
Prim.Soul and OoID adjusted, thanks for reminding me, Tinne…