The trick to making Empty the Pits good in a control deck is finding ways to draw cards or kill your opponents creatures without putting pressure on your own graveyard
4 - Mox Opal There are five Moxes included in the Power 9 (scroll down for the full list), and while the effect of adding a single mana may seem a little tame, its a powerful ramp in the early turns
Hushbringer Lots of folks run enters-the-battlefield effects for their dorks out there
But someone did a manual count in 2021 and determined that there were 84,108 unique cards so were close to 90,000
The other mentions are basically any of the Gisa or Geralf iterations, all of which are easy includes in any deck that cares about having the best Zombies in Commander in it, because they make a lot of Zombies and have some excellent synergies
Its also worth pointing out that Salvation Swan blanks on a substantially bigger fraction of the creature roster, to the point where I think its actually a problem for blink decks