I recently got back into playing Neverwinter. On the latest patch, they made their enchanted keys, which is their version of the master key, as bind on account in order "to fight the 3rd party" Cryptic's words. However as in that game, keys are very much a part of the player unofficial currency. However this effect, will force the player to buy keys outright by zen.
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My PvE/PvP hybrid skill tree