Shield charge triggers gems socketed in Poet's Pen

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RFTPS3 wrote:

Back when Shield Charge was changed to attack with off-hand damage, it stopped triggering spells socketed in Mjolner and Cospri's Malice. However, currently watching ZiggyD level a character on stream, he is able to trigger Arc socketed in his Poet's Pen by using Shield Charge.

You can see in this clip the red effect from Automaton Arc being triggered as he Shield Charges around:
https://clips.twitch.tv/AgreeableBombasticOrcaSquadGoals