Burn is a decidedly red effect, with red cards like Lightning Bolt and Fireball defining reds identity in Magics very first set, Alpha
You always start the game with your combo piece in hand, and the format has so many threats to cheat in besides the Ripper: Patron of the Vein, Markov Enforcer, and Crossway Troublemakers are just a few of the big vamps that this Rakdos commander puts into play unreasonably early
Great utility card in any creature-heavy deck
Each of the brackets is intended to represent a different level of play
I would place -1/-1 counters with other effects as well and turn the Aftermath effect into a board wipe
The first is a triggered ability: "When this permanent enters, target player may search their library for a card named Mothers Yamazaki, reveal it, put it into their hand, then shuffle." The second and third abilities represented by Mothers Yamazaki's "partner with itself" keyword modify the rules for deck construction in the Commander variant and have no function outside of that variant