Comment from Digitay

Thanks for your reply @Dinoqualle ! :)

About the minimum ratio of the Scrap engine, I think that 2 Raptors and 1 Chimera is the minimum because with the second effect of Wyvern you can special summon the second raptor from the deck and sometimes it's useful to get two tuners on your board.

About the Doodle : I wasn't conviced by them either until I played them at my local. It saved me at least one game : the doodle book was in my GY by Stego effect, I used UCT effect during the oppendent's turn and after that he used Triple Tactics Talent to take control of my UCT. So he was about to destroy my own board with my OWN boss monster. So I used doodle book effect to get Doodle Tyrrano in my hand and to tribute sommon it and destroy the UCT he just took control of, and man, it saved me the game haha. So I will definitively keep doodle in my list personally. It's only a brick if you have the trap doodle in hand, the other two are fine.

Animadorned at one is a risk because if you have Animadorned and Misc in hand during your first turn, you wouldn't be able to use Misc effect which banishes imself to spe Animadorned so I think it's better to play it at 2. Sometimes, I ended up having two pills in hand but it was never a problem, I always keep one in hand for my next turn and use the other this turn. And as UCT isn't the only pill target, 2 is a good ratio I think. 

You're right bagooska isn't that useful. It's only if I brick hard and can only play Raptor : norm Raptor, use effect to pop himself, search Chimera, norm Chimera with Raptor effect, Raptor come back on the field and you can do any level 4 XYZ. 

Avramax is a card I've never played because I don't have it (will definitivly buy it) and yeah it's a really good card ! I'll put Avramax instead of Bagooska ! Thanks for that ! :)

I hope that my reply helps you ! And it's only my personal preference so there are surely other very good ways to play the deck ! :)