You won't have to pay the commander tax to activate that ability, and activating that ability won't increase the commander tax to pay later
If youre new to trading, there is a lot of information to take in all at once with how trading works, generating Shinedust, all of the rules, and more
The plus ability, however, requires extra permanents that you dont mind sacrificing, which limits the decks Vraska can go into
You can still cast instants at any time you have priority, of course
Access these by clicking on the circle of all the mana colour icons at the bottom of the Home menu
Commander Qty: 1 Price: $0.99 Kaima, the Fractured Calm At the beginning of your end step, goad each creature your opponents control that's enchanted by an Aura you control