The problem with Magnus is not any specific ability, its how all of his abilities work together
Good STR means you never need anything other than mana boots+blink+refresher
He's a good sololaner due to low CD low mana cost 300 damage nuke
He turns every hero into a good farmer with Empower and of course RP is an instant Blackhole
You cant compare any single ability of his to another support and then say "Look! It's balanced"
If you ever get caught by RP he doesnt even need that much backup to murder you all. RP+Shockwave+a few attacks with Empower is already like 1000 damage. His team only need to clean up. A Blackhole without good follow up does basically nothing
You can't forget that, like Chrono, BH keeps stunning for the duration. If RP misses AM, he can immediately blink in and kill you. If he tries to blink in to save his team from Enigma he merely eats the BH as well.
Turning Empower into cleave only for Magnus would be enough, cleave was his passive before skewer was introduced, free battlefuries for everyone is a bit too much in lategame
I think RP is alright, it never felt like too much in the past either, though it would still be great if the stun was 2/2.5/3 or something. Skewer/Empower are what make him great.
I always played magnus as tank/support. Guess I was doing it wrong?
He probably wasn't autistic though, I don't get the point of spewing insults to people where they aren't going to see them. Or just spewing insults in general.