Witchcrafters plus Shaddoll, with the help of Magisutus Verre that helps search fusion spells.
This is a budget deck that I think is fairly competitive for his price.
I am too lazy to write every strategy, you should start with Vice-Master and then use Shaddoll Fusion to get the cards like Winda on the board using materials in the deck.
The synergy is not bad, tell me what you would improve.