Well, I've been making a hero defense map.
I know most of my spells in my map are not MUI.
Must it to be MUI? Since all of my heroes are using different abilities.
Yes, it should be MPI, in case the ability has a certain period of time to work and you are allowed to cast that spell multiple times. Er, I don't think making it MUI is necessary.
I'm on a page about incorrect corrections, and spent the better part of like two hours trying to get someone to understand that -5^2 = -25, not 25, and then that post had comments get reposted because that group is self sustaining, and that person was in turn trying to explain what I just explained to them. And I'm taking that as a victory