I posted this review in the discussions already, but I'll post it here too for good measure:
I am personally a huge fan of expanding source mechanics for ttrpg systems I enjoy, especially when they build on what was already great or when they introduce a flexible new system that could be slapped on the core rulebook in a whim's notice.
And that's exactly what's on the table!
As the SCP universe is rich with all kinds of crazy anomalies that can warp space and time, it only makes sense that perhaps some humans can learn this as well, perhaps from a genetic level, or perhaps they gained the power from an accidental anomalous effect.
Either way, this system introduces a new proficiency called 'Reality Bending' which players can learn and grow.
The higher the proficiency gets, the more you can do with it.
This is definitely a system that will usually only start to shine later on in a game, but it also allows players to think up ANY kind of weird anomalous effect they want to conjure up.
You want to turn SCP-173 into a balloon version of itself? You got it!
You want to summon Ronald McDonald and The Burger King mascot and force them to fight to the death? Not a problem!
This system accounts mechanically for about 90% of the crazy stuff players can come up with.
This might sound extremely overpowered on paper, but do keep in mind this only REALLY come into play later on in a game.
And even then, pulling off insane stuff is really time/resource-costly.
Anyway, I can definitely say that, out of all ttrpg's I've played (Star Wars RPG, Call of Cthulhu, Vampire the Masquerade, D&D), this 'magic' system really stands at the top of how fun it is to imagine your own spells and give them a mechanical form in this game!