Spider-Man, Miles Morales Is Spider-Man, Miles Morales vanilla
There are medium-speed combo decks like Hidden Strings, there are lightning-fast aggro decks like Boros Convoke, and in general, there are a lot of non-interactive, linear decks
The biggest issue here is that Krark, the Thumbless has an ability that flips coins, but doesnt really care about other cards doing the same, so ultimately, it isnt that ideal as a coin flip commander but rather as a spellslinging one
Having a repeatable way to copy spells in the Command Zone is very strong indeed
The damage that was divided among the illegal targets simply isn't dealt
Blue decks ramping into Mufasa instead of Tamatoa is something to be ready for