I'm quite certain I don't even do black justice here, but I'll refrain from bloating this response further
Ground Seal turns off Snapcaster Mage, Deathrite Shaman, Unburial Rites, Seance, and part of Angel of Serenity
Are your rankings similar to mine or way different
Three Steps Ahead One of the best Cancel variants, Three Steps Ahead provides an instant-speed Clone that sometimes hits a spell and filters your hand, giving it graveyard synergies on top of the token stuff
I think the one thing I would've liked to see more of in the list are summon cards: if you look at our commander options, Tidus, Yuna's Guardian and Yuna, Grand Summoner, both clearly work exceptionally well with the new summon creatures like Summon: Valefor as Tidus can remove lore counters to keep them around longer and Yuna can pump up creatures when the summons die, and that's a unique new game design space that would differentiate the deck from more generic +1/+1 Counter lists out there
