Madolche

Kashtira Fenrir is my favourite Madolche card

Madolche can use different tools to win or to floodgate the opponent, such as Barrier Statue of the Drought or Necrovalley, which I have not included in this list but can definitely be taken into consideration

Arguably, you should play more than 40 cards, since the deck has a lot of bricks, but at the same time, you risk losing consistency. I would recommend playing 41-42 cards.

Cards to take into consideration are definitely Vernusylph of the Awakening Forests, Mudora the Sword Oracle or Keldo the Sacred Protector, either as possible side deck options, or even in the main deck if you want to counter heavy graveyard-centered decks.

Also, you can consider cutting the generic cards in the extra deck that have contrasting attributes with Dominus Purge to maximize versatility and possibilities.

In the side deck, you probably should play Evenly Matched instead of Dimension Slice, and Gordian Slicer instead of Cosmic Cyclone if you possess these cards (this is just the copy of my IRL deck).

I hope you find the list somewhat useful!