As a card themselves, Emrakul, the Promised End is an incredibly good time
The basic idea is to use abilities like Vivi Ornitiers to deal your opponent 1 damage whenever you cast a noncreature spell and then start slinging noncreature spells like its going out of style
The unique wordings associated with older poison cards versus newer infect cards determines the answer to this question: Poisonous creatures kill you with normal damage before the poison trigger has a chance to resolve while infect creatures dont
10 Gerrard, Weatherlight Hero Futureshifted Frame - $98.96 The hero of the first Phyrexian Invasion on Dominaria, Gerrard, Weatherlight Hero is back after his appearance in Commander 2019
Top 4: Death and Taxes Lands Creatures Spells Sideboard Death and Taxes players seem to enjoy complaining about the lack of powerful white cards that WOTC supposedly print, but it looks to me like the archetype has continuously been getting good cards recently
I would almost rather a Viridian Zealot main as it is at least more proactive than this