The idea is to use spells and traps to slow down the game, negate opponents actions, and stall until you can banish as much of your deck as possible with Golden Castle of Stromberg and Pot of Desires.
Once your deck is mostly banished, summon Gren Maju da Eiza. With enough banished cards this should function as a 1-shot kill. Failing that there is also beatdown with either Hexe Trude, or Eater of Millions, both of which benefit from Golden Castle in their own ways