I got one of these last night, and I feel like this could make for an interesting addition for some builds, particularly with Electrocute - Surge of Power and Meteor - Lightning Bind. Although this may become obsolete with Black Hole in 2 weeks, it could also be a replacement allowing for an extra skill slot.
I'm going to test this out over the next few days. Let me know if there's any combination you would like me to try it on.
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My SNS at it's best: Silmeria