Tldr: Death and Taxes playing Collected Company and Anafenza Kin-Tree Spirit.
Anafenza, The Foremost = Anafenza Kin-Tree Spirit.
Overview: With the release of Collected Company and Anafenza Kin-Tree Spirit, Death and Taxes in Modern have gotten 2 strong additions to their game-plan. Collected Company allows Leonin Arbiter and our overall mana-disruption plan to be more consistent and operate at instant speed, thus allowing us to move away from cards like Aven-Mindcensor. Collected Company also allows us to dig deep into our library for our hatebears, allowing our sideboard strategy to focus mainly on creatures because they are now easier to get to.
The new Anafenza allows us to be less sensitive to electrolyze type cards and provides our deck with extra stopping power and making our collected companies a bit more explosive. This is currently being tested however and may be cut from the final list because it does not perform any specific hate functions.
Eternal Witness is currently a two-of tech for the situations where we can company into it and then continually blink it for value with flickerwisp and resto angel. This card may go up or down in numbers or be eliminated depending on the way testing goes.
The rest of the list is fairly stock. I left the aether vial version for hatebears because I believed the bears deck had a better matchup against rock like strategies, but now that collected company has been printed it's possible this strategy now has a CA engine that is worth pursuing that can make it a superior list.