Oh yes, let´s Lightning Vindicators skyrocket through the roof with another OA source. 
Not every mastery is going to have an exclusive with %DR, RR, skill disruption, etc. :rolleyes:
Further, an exclusive is just another skill, one that excludes a few other skills.
Shaman is already very robust and varied. Lightning is strongly supported in items and devotions.
I don’t think it needs anything.
To be fair, it would be at the cost of 30% RR. Not exactly a good trade for a Vindicator.
Well, that´s true. Even the Crit won´t equal that.
I’d say give it some Lightning retaliation or chance of stun retaliation, since it would thematically fit with the skill.
I think it’s mostly fine, it’s just outclassed by Censure because permanent and instant RR & dmg red. is just too valuable.
For other class combos it’s still worth taking.
Maybe add some skill bonuses to some targeted items to make it easier to supermax for those juicy crit bonuses.
Adding movement speed quite nice, or % physical dmg converted to lightning dmg increases with lvl of this skill, or 30% fire/cold dmg converted to lightning.
Since its stormcaller’s pact, maybe add to it an effect similar to ulzuin wrath. You hit char under it and get smacked by lightning from heaven xD
Now this sounds like fun.
https://www.grimdawn.com/forums/showthread.php?t=78947&highlight=duck_king
I made this exact same thread some time ago. Yes I still agree that it should be buffed.
If you ever made a lightning build you will find stun res in relatively high abundance so adding “Stun res” is not helpful except when levelling.
But like before it’s still elementalist’s that lack the other options of damage absorption/reduction that suffer. Guess there’s always Primal Bond for that but at a massive loss in DPS and other buffs which aren’t designed for lightning…