Do NOT waste your Nethershards on stuff u don´t need, save them to 7.3!!!

In patch 7.3 you will be able to buy XP for your followers for Nethershards.

Travel to Broken Shore
Talk to Warmage Kath´leen that is the Nethershard vendor opposite the Legionfall Construction Table.
She sells an item called Grimoire of Lost Knowledge that grants 6000 XP directly to a Champion.

So, do not waste Nethershards on stuff you don´t need and if you want to buy XP for champions.

Before in PTR, you could buy this item from the vendor in the Vindicaar,ship and now it has shifted to this vendor instead.

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