"A Core That Is Super Advanced For A Skript"
sorry but I had to laugh at this.
There is absolutely nothing advanced about this script.
It's written very poorly.

Problems:
- a LOT of repetitiveness. Like the game mode command, having a section for "1", "c", "creative" each.... why not just 1 condition/section? Also the fact theres another command "gc" which is a copy/paste of the game mode command. A solid 80 lines that could have been cut down substantially.
- more repetitiveness. Look at the msg, emsg, minecraft:msg, minecraft:w and w commands. All the same, all copy/pasted. Could have used either aliases and/or functions to cut out repeating code.
- The op command, sorry but this is just a waste. and you shouldn't be overriding vanilla commands like this. Not only that, this password stuff, just funny.
- clear chat command, 2 problems:
1) why 1000 times? theres only 100 lines in chat.
2) Why broadcast? I thought this was clear chat not flood console?
- the spamming of console commands ... HOLY F... every 5 minutes spamming console commands to kill entities... if ONLY skript had syntax to kill/delete entities... IF.... ONLY!
- The "on chat" events.... holy crap did you repeat these enough? 10 separate event listeners to listen for the "N" word, spelled different ways. You could have had ONE condition in ONE chat listeners. This is just awful.

tl;dr:
This is so poorly written for something that claims to be advanced.
On top of that, there is no advanced functionality here. Everything here is something any newbie Skripter could whip up in 5 minutes.
This is just bloated with poor decisions and extremely poor Skript skills.