[@NarcissisticPotato]I'm still not sure what people mean by "grounded in reality" considering mutations don't give you superpowers. My judgement is the limit here, show me what you have in mind and I'll tell you if its acceptable.

[@mattmanganon]WOAH slow down there man, mutation is not an attempt to put limitations on characters ans stop them doing outlandish things, I, as God Man, am imposing that limitation on characters. Mutations are only the vehicle by which they have become common place and less noteworthy, I could have chosen magic/aliens/gods, but I didn't. 

This isn't my first Rodeo Mattmanganon.

In this world, no extraterrestrial has ever visited, nor has magic ever actually been any more than parlour tricks or mutant powers. The introduction of TRUE aliens and TRUE sorcery would be extraordinary, like it would be in real life. 

Alright, how about this. You can be a magic using alien with precognition BUT, and its a huge BUT, if anyone, including NPCs, works out either you're an alien or using magic, you're character is abducted by the secret service and taken directly to area 51 never to be seen again. Understood?