This is a work-in-progress for a shared 2-player deck simliar to "Dandan" format in MtG. The only sites are Hamlet and Annual Fair, so threshold is hard to come by. How do I gain threshold? You gotta let those families move into your Hamlet! Then, you can try to protect them, chip away at your opponent's avatar or their own families, but beware - you won't be able to play anything bigger unless you leverage the magical elemental threshold those families provide. The Blacksmith Family will bring the fires of their forge, and the Lovecraftian Fisherman's Family will help you summon up the Great Old One!

I will updating this regularly after some testing. Would love to hear if anyone else gives it a shot and has any feedback!

5-27 Update: The core of the deck is 10x of each Family, 17 Hamlet, and 8 Annual Fair. The spice is up to you really, add 9 cards from each element to fill out the deck and you're in business.