You typically get anywhere between 101 and 105 sleeves because they weigh them to determine quantity
There are a lot of cycling creatures from throughout Magic history, and Ive picked some of the best here
After that though, you could consider a lands-matter sub-theme, playing multiple lands a turn to stack up the triggers
For those brimming with questions, head to DailyMTG, where Gavin Verhey has a comprehensive article about Archenemy in Duskmourn: House of Horror
And as an enchantment, its much harder to deal with than a creature
On the other hand, in general, the partner pairings score low, with one exception: the Shark / Human combo of Shabraz, the Skyshark / Brallin, Skyshark Rider has 141 decks (which is especially surprising since Shark wasn't a creature type in Magic before Ikoria and Commander 2020 ), making it the most popular partner pair by a significant margin