I've had an idea to create a skill that will put me into invisibility for 1 turn with 100% probability and in 20% of cases - make me invisible for 2 turns.

I have tried implementing it via:

But the game recognizes only second one and makes my skill quite miserable (20% chance for invisibility for 2 turns).

I have no problems making a workaround via story or extra statuses but please fix the behavior and make it possible to apply statuses like that via STATS alone