The payoff of this meld pair, doesn't win the game on the spot, and I'd stress that to your Bracket 3 playgroup because while this deck puts together powerful cards, it is not optimized to be unbeatable, and more focused on a huge play with some Golgari death and graveyard interaction molded in
At three mana, this is reasonably priced, so I can see a lot of decks running it as a budget Heroic Intervention
It makes sense to me why the design was done this way, as were certainly not short on S-tier 5C commanders
The thinking is that Polukranos is your biggest investment with the least immediate payoff, but Im not sure that cutting a big threat is better than just cutting another Satyr
Now, this Conqueror didn't make this list because it's another Lifelink payoff
Aurelia, the Warleader Aurelia, the Warleader is one of the most aggressive angels