I will try #Damocles and #predragovictomislav suggestions in future games. Lets see what happens.Added (2021-02-25, 11:33 PM)
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Quote predragovictomislav (

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These are steps:1. get Gem of End
2. click on it when it is in one of 6 inventoy slots to get skill selection
3. choose skill you want by clicking on it
4. press "Right arrow" on your keyboard to activate skill
This is working thank you all helping friends