Update: The Magic Knot

Sorry it's been so long again! Summer is finally here so things are only a tiny bit less hectic in our house. I'm going to enjoy every minute of it because very soon my youngest will be off to Kindergarten!
Anyway- that's not why you're here. You're probably here because you want more information about the magic knot that I used in my Rainbow Dash Blanket. I wanted to update because I had read a lot of other crocheters were having issues with the knots coming undone.
I'm happy to report that almost 2 years later (OMG!) that the blanket is still in pretty good shape. There were a couple of spots where I had to reknot the yarn-which was not fun. But all in all it was OK. My biggest gripe with the magic knot is, well- the knots. Depending on where you join the yarn and how good you are at pulling the knot tight it can get unsightly. I tried my hardest to hide the color changes but sometimes they are unavoidable. I also made a Draculaura blanket using the same technique. it was A LOT larger than Rainbow Dash and it took a long time, but it would've taken me 3x longer if I had to deal with sewing ends in.
My advice is this. practice with the technique a lot, it can be tricky to get it down at first and you don't want to be playing around with it on a commissioned project or something you want to sell down the line.
Once you practice- do it more. Seriously make a whole chain of weird ass color changes just to get a good feel for it, play around with where in the stitches you join your yarn so you can hide the knot.
Do a swatch. An actual swatch, probably 20x20 stitches with some color changes so you can you guessed it, practice some more.
Once you get the hang of it you'll be a pro. As long as you're pulling tight enough your yarn shouldn't break. There are a bunch of tutorials on YouTube to help you out as well!

Here's Draculaura so you can see how massive she was! It was over a year ago that I made her but I believe the graph was 180x100 if you zoom in you can see some of the knots.

Happy Crafting!