It's not what you'd typically associate with a blue/black Commander, but it's interesting enough that it deserves to be looked at by those seeking something different
Ajani, Nacatl Pariah / Ajani, Nacatl Avenger The two bodies and power and toughness ratio from the Ajani, Nacatl Pariah side is good for Limited (How do you compare it with Watchwolf, and do you love that you get to draft Modern Horizons 3 ?), and then after one +2 loyalty ability, Ajani, Nacatl Avenger is ready to ultimate
As soon as it enters the battlefield, you can immediately put an oil counter on it and on the next turn, wipe all 1-cost nonland permanents from the board
If there are multiple effects that attempt to modify how a creature assigns combat damage, that creature's controller chooses which effect applies
Fortunately, there are ways to put the kibosh on that