The challenge with turn points is that I believe the Toolkit is currently setup to Set Turn Points to 1 at the beginning of their turn. Thus, if you simply reduce an opponent’s card’s Turn Points to 0 or less on your turn, it’ll go to 1 at the beginning of the opponent’s turn. I think this happens in the 3DCard blueprint at the Event On Active Player Turn. I would suggest adding a branch in there before the “Set Turn Point to 1” to check for a new Boolean Variable (Which for this example, we’ll call “Stunned”). If True, Set Turn Points to 0, Set Card Active to False (otherwise the card won’t darken, indicating that it can’t attack), and Set the Stunned Boolean to False and continue as normal (EG . If False, continue with the code that the Toolkit already has.
For your Ability, follow the tutorial in the Toolkit’s Documentation. In the Ability - Stun function (or whatever you want to name it) it only needs to turn the Interaction Receiving card’s Stunned Boolean variable to True.