Brace yourself, because here come the vultures.

1) Can't have a Counter Spell ("Mystical Fire Typhoon"). They don't exist.
2) Some of your Level 3 monsters have point amounts that are WAY too high and no detriments to their effects. (Example: "Fairy of Shadows") There are only 5 Effect Monsters with 1800+ ATK, and ALL of them have a detriment in some form, and all but one of them have 600 or less DEF. Then there's "Arsenal Bug" with 2000 ATK & DEF, but it's almost useless in modern play. But still. Need some downsides, dude.
3) "Wielder of the Sword of Wind, Gale's" effect should read as follows: "When this card attacks a Defense Position monster: Inflict piercing damage to your opponent." It's much shorter, and more up-to-date with the modern terminology. But that's kind of minor.
4) "Set card" can refer to either a face-down monster, or a face-down Spell/Trap. This needs specification almost all across the board in your cards.

While it's on my mind, I haven't poked around on the YCM forum for a while, but for everyone's sake so I don't rip out their hopes and dreams, Empire, do you think you could pull up a link for that big long tutorial thing from YCM on fair card effects and proper terminology? If not I might try to find it again myself, but it's been, like, a year at least since I've been there. Of course I won't be AS strict as that page, but it's for everyone's self-improvement.