It took a while when I first came across today's list before I recognized it as a variant on Death and Taxes. The core cards of the archetype are obscured by the sheer volume of singletons, many of which you rarely find in a deck like this, but I think provide the archetype with some important benefits.
Death and Taxes is fundamentally a mana denial deck that seeks to stop its opponents from executing their gameplan or, at best, stop them from playing any sort of Magic at all. The fundamental issue with strategies like this is that you need to end the game quickly, because eventually all players will draw out of an early mana screw. Applying pressure while disrupting the opponent's mana is rather difficult, but Leonin Arbiter and Thalia, Guardian of Thraben are perfect here as they provide disruption on aggressively-costed bodies.
This list goes even further toward that aggressive slant with plenty of one drops to get the clock started early. Dryad Militant has applications against Snapcaster Mage, Lingering Souls, and Past in Flames, making it a suitable card for the deck anyway, while Kytheon, Hero of Akros has the highest potential upside if you can transform it.
There's also Epochrasite, which functions similarly to Serra Avenger in that putting it onto the battlefield with Aether Vial is preferable to casting it. While not the most aggressive creature, I like mixing in some threats that are resilient to removal, since spot removal is going to be a common way for the opponent to protect their life total and buy time to draw more lands.
There's certainly some turning work to be done here with all the singletons and an egregious 61 total cards, but it's clear that there's a method to some of the madness here, and that method is sound. Death and Taxes is an archetype I've been thinking about a lot recently as one that is getting closer to breaking through once again in Modern, and one or two more positive innovations could be enough to get it there.
- 3 Epochrasite
- 1 Banisher Priest
- 3 Dryad Militant
- 1 Hero of Bladehold
- 1 Kor Skyfisher
- 4 Leonin Arbiter
- 4 Serra Avenger
- 3 Thraben Inspector
- 1 Brimaz, King of Oreskos
- 1 Isamaru, Hound of Konda
- 1 Kytheon, Hero of Akros
- 3 Thalia, Guardian of Thraben
- 1 Thalia, Heretic Cathar