I'm loving this mod a lot. I've played through the game with it a couple of times so far, and I love the extra challenge it adds. I do have a suggestion, and I've also noticed what I think is a bug.
The bug I noticed is that the magnet effect doesn't show up at all after I pass Greenflower Zone. At first I thought I was just avoiding it through RNG, but now that I've played with it a lot it's definitely bugged.
As for the suggestion, one thing I'd love is if there was a way to turn off and on the chaos aspect of it but keep the effects. I say this because I really want to try and play through the whole game as tiny character, but it could also be used for other effects as well. The effects are fun in and of themselves, so I'm sad sometimes when one of the spicier ones cycles out. I know it's a chaos mod so this would possibly defeat the purpose of what you were going for, but it's just a thought I had while playing.
All of that said, this is a ton of fun. I look forward to future updates.
EDIT: I was wrong, magnet doesn't disappear after GFZ. I played around with the mod again and I had it for longer, but eventually it did stop showing up. I'm unsure of what the issue is.