My deck works got 7k assessment points, but it is not consistent because you can get your twisters out late, or he gets lucky.
Rex Raptor with his famous skill
1x Vassal
1x Blue-Eyes White Dragon
3x Crawling Dragon #2
3x Two-Headed King Rex
3x Gravedigger Ghoul
3x Twister
2x union att
1x Secret Pass to the Treasure
3x Riryoku
The thing that sucks is that he has so much cards you have to take care of, it is really hard to consistently farm him without (Still love you) Ryu. but the moment you are set against his soul exchanges and ectoplasm; he is a piece of cake. You need 1 monster with riryoku and twister for the best start of the game.
Since you technically don't need 1900 ATK to beat anything in his deck, why not replace the Dinos with other strong monsters and run Balance instead? That'll increase your chances of starting with important spells like Twister and Gravedigger Ghoul. Harpie version might also work with Harpies to 🔥 Ectoplasmer.