What do you think ?

https://2img.net/r/ihimg/photo/my-images/195/malefic.jpg/

Ow..dude take it easy. This build won't work because you run to much Malefics and High level monsters that cannot be normal summoned. Try this one (Altough it's old it still works...with a few fixes it can work perfectly.)

Lots of problems to address on this one:

1) 46 card deck is a no-no; you wanna stick to 40.
2) Man-Eater Bug and Marshmallon are unnecessary and take up space.
3) You don't wanna run the Sins that banish from main Deck. Rainbow is a bit more forgiveable, but the main monsters are still read draws.
4) You can field spells that net you advantage. Endymion is okay, but the others aren't so good; and while Sin World lets you search, if your opponent chains MST you're out a Draw Phase AND a monster.

Yours is better Tweedledum, but Sins don't like high monster count. Look here for my Sin deck; I've been playing them for about a year, and this is about how the need to run.

what you need to do for that deck is make it all for special summoning, i put a montage dragon in there so it can have some major atk when you are in a tight situation