tbh of all the things wrong with Pokemon Rejuvenation, the thing that pissed me off the most was the side quest to get Type: Null
You need a handful of different items to get him, one of which is a magnet. The NPC who needs the magnet recommends you get it from a Nosepass. Nosepass show up in a single area. They have a 1% chance of spawning, the lowest spawn rate possible in a pokemon game. When they do spawn, they only have a 5% chance of having a magnet. That means you have a 0.05% chance of getting a magnet per wild encounter, in that one area. That's the officially recommended strategy.
There's one other way to get one which is significantly easier, but a bit obscure and unintuitive, by doing a separate side quest. Some painter wants you to show him a few specific pokemon, and if you show him all the pokemon he wanted to see, he gives you a magnet. No one who wasn't using a guide would realize they'd get a magnet as a reward for it, and the NPC who gives you the quest to get a magnet doesn't even mention it and implies Nosepass are the only way you can get one.
@dave Rejuvenation massively increases the rates for shiny pokemon, to something like 1/200, iirc. Official pokemon games have something like 1/4000 even if you have all the stuff to increase the chances.
Have you seen the special shinies Sword and Shield added? You know how when you send out a shiny pokemon, it sparkles? Now, when you find a shiny pokemon, it has a very small chance of being a super special shiny that gets a different sparkle animation than regular shinies. Because we needed shinier shinies.
