Krawler is one of the decks of all time. With this deck list I plan to propel it from villain of the week to topping Ryzeal format.
This deck takes a very similar approach to the anti-meta decks that have been seeing relevance due to the high amount of handtraps in the format. Fiendsmith Kashtira and Fiendsmith with a small magical musketeer engine are cool and all, but what they got nothing on flip effects.
Combo Guide:
GLHF
on a more serious note, this deck is built to take an extremely fragile deck with very few ways around ashblossom, and insulate it with a fiendsmith des irae. I don't have a great combo idea yet because I hvaen't done nearly any play testing on it yet, but what I do know is that Girsu is the normal and you can follow a pretty linear world legacy combo to get a basic set up. If you want to truly insulate the girsu combo you have to use sanct to go through the fiendsmith combo first before commiting to the normal summon. Soma can be an extender if you get handtrapped on Girsu, but it is a pretty low to the ground endboard compared to no handtraps.
Realistically this deck is terrible, but I think it's the most playable version of Krawler so far, so I wanted to build this as an example of taking a low power deck and seeing if it could maybe snatch a round at locals.