Combos:
All the regular combos apply, the difference here is you want to build a strong going first hand. Everybody goes on about how Madolche is a going second deck, but let's be honest, in the current format going second is almost always met with 2+ negates. One if you're lucky. PSY- Frame would probably run better with the engine style, keeping monsters out of the GY but I own Ash IRL and still think it's a staple. Solemn Judgement to be safe, is there anything that gets past it? Probably, but chances are you won't have any issues. Paying half your LP doesn't really do anything, again, current format, duels don't last too many turns. Negate as much as you can to set up the EASY OTK combo. I won't be posting any actual combo instructions, these can be found everywhere.
The dimension shifter is experimental, but hear me out:
Perfect going first board/hand-
Teacher (GY disruption)
Promenade and maybe a chalice (1/2x negate)
Ash in hand (pushing it but I have gotten this hand quiet a few times)
Indestructible Hoot from Jelly, straight chillin
Sistart (protect the backline)
And bangggg Shifter to end.
How many deck engines rely on GY? MOST
This sets you up for an easy win.
Going second is far more tricky IMO. Madolche doesn't deal with negates too well.
You can always swap out/add as you please. The best thing about this deck is the freedom of choice.
Keep that Side Deck handy cause there are so many swaps that can be made depending on your situation.