My Skill Bar Is Full of Kingdom of Loathing Skills

【The rating just came out, but it'll go up later (probably)】 Red transmigrates to a world of swords and magic, where he discovers that the skills he can learn seem a little different from everyone else's. 【Each time you level up, you may choose one skill from any of the following 18 categories!】 【Drench: Spend 40% of your maximum mana to gain one Moisture Mark. The mark reduces the maximum mana cost of every skill you use by 10%!】 【P.S. The mark cannot be removed by ordinary cleansing skills!】 Step on your left foot with your right, and cast an endless stream of skills to your heart's content! 【Strength Enhancement: Spend 10% of your maximum mana to increase your physical attack by 100%!】 Big hits, nothing but big hits! And that's not all: choosing Hell difficulty also grants you a blessing! 【Limit Break Blessing: You can break through your limits without restriction, in any area!】 Plus an overpowered trait! 【Best Partner: When you deal damage an enemy is vulnerable to, gain a 20% increase to attack, defense, and speed, and recover 20% of your maximum mana!】 Now that's what it means to grow stronger the more you fight, with unlimited growth! 【Soulchaser Bird: Skills that cost less than 10% of your maximum mana cannot damage you】 Banh Xiao: “Lockley calls me the comment-section champion. What should I call myself in another world?” Years later, as Red faces the legendary final boss, he still delivers his catchphrase: “Choose: bridge or sever!”