Cards like Korvold, Fae-Cursed King and Midnight Reaper do a good job of keeping a Sacrifice players hand stocked with things to spend all that mana on
Having Agent Maria Hill in your deck makes other teamwork cards stronger
This one ran across a cycle of gotcha cards that each had two words in their names that you got gotcha'ed if you said either of them (gotcha was a mechanic that allowed you to get cards back from the graveyard if you caught the opponent doing a prescribed thing and yelled out "Gotcha!")
At the time of writing, I've played over 350 games of the format with a win percentage of approximately 64%
For a while she acted as a free agent, driven by her hunger to be the best spy in existence to sell her services to anyone who could afford them, but soon grew irritated and dissatisfied with the lack of challenge these presented her
This shores up the weakness of creature-based strategies in Commander, as turning all of your creatures sideways usually makes you susceptible to other players