How often can I use Illuminate's "while prepped" effect?

Name

How often can I use Illuminate's "while prepped" effect?

Details

Illuminate (While prepped, when you focus or open one of your breaches during your turn, deal 1 damage.) deals 1 damage every time you focus or open one of your breaches on your turn. There is no limit to the amount of damage that can be dealt during a single turn.

Cards

Illuminate

Mages

Yan Magda

Nemeses

Other

References

https://boardgamegeek.com/article/29225843#29225843