I think I just got the most overpowered deck.

[Duke Leto Atreides]

I used the starter deck with the geck, rabbit and tadpole.

I then go the Lizard unkillable wooden idol from my first 2 visits to the carver.

Now my geck is immortal and costs nothing to put on the board. This is already great, but then I also found 2 more gecks on the first stage. I just need to upgrade them and avoid picking too many cards and I think I'm set to defeat the moon easily.