Hello there!

My apolagies for asking this question in English, but I'm from the Netherlands and my German isn't perfect

Now then. As the subject says, I've a question about "Effektschutz". Casting it involves holding a mirror or prism in front of you, as I understand, and after that, you're shielded from the very first Magic effect that affects you. But what do you do to indicate "Effektschutz" is active on your character? Do you keep holding a mirror or prism in front of you? Or do you need to keep a mirror or prism on your person?

Greeting Hellwolve!

As I know there's no need to indicate this spell in any kind. You dont have to wear the prism/mirror with you while the protection is still active. You can even cast it on any other player.

If you get hit by any spell it might be good to tell the caster why his spell isnt working instead of just ignoring it.

That's interesting news Good to know; thanks for the answer!