Do you get a sense of achievement from winning with insanely complicated combos? Well, then gather round folks.
Originally this deck was just a version of the popular Expedition Hooru Curse Control deck that seems to be played more than it should be. But that deck always felt underpowered, so I wanted to give it a better win condition. Instead, I found this deck:
Counterfeit Casino
The key is that you can use
Archmagister's Prophecy to win the game outright if you are able to
Mass Polymorph everything into a different health/atttack with 12 units. Now, I'll be honest; this virtually never happens immediately, but you can use the Prophecy (or better multiple Prophecies) to fix out the conflicting units. And the thing is, once you've deadlocked the board with 12 units, you can pretty much keep this going indefinitely as long as there is no relic removal.
So get ready to do some math sorting for a sweet achievement and unique OTK!