The last ability of Relentless Rats lets you ignore the "four-of" rule
In addition to replacing Vorel or helming a more a +1/+1 counter focused version of the deck, Zimone, Paradox Sculptor slots well into the 99 of other +1/+1 counter commanders as she both sets up +1/+1 counters and is a pay off for them
You also never know when youre going to need to stop someone from doing something that will win the game on the spot, so reactive answers have to be ready at all times
Kanji and katakana characters require precise stroke rendering
There is nothing you could do to Juzam Djinn to make it work with reprinting
Sultai Mutate: The Sultai Mutate deck is at a natural disadvantage for out-of-the-box play simply because its face commanderOtrimi, the Ever-Playfulneeds a bunch of mutate cards to be powerful, and since mutate is a new mechanic in Ikoria , there aren't that many mutate cards in an absolute sense (especially compared to other Commander 2020 themes like Humans or cycling)