This can be done by playing low-level monsters, like Parlor Dragonmaid, that have an effect that will send monsters from the deck to the graveyard
Emrakul, the Aeons Torn is the obvious answer, but you can probably look at Sundering Titan, Progenitus, or a host of other finishers depending on the matchup
Furthermore, we got a bunch of new versions of Omnimon
It's very strong in multiplayer since you are more likely to be running at least one opponent with Green ramp and two-drop ramp spells like Rampant Growth and Farseek are getting added to ramp brews in Commander over conventional ramp like Cultivate and Kodama's Reach, so on the turn you have three mana, one player casting a two mana ramp spell with an extra land is pretty likely, and if not, then someone probably cast Explore spells or dropped an Exploration and an extra land or two
thus, once operations resume (expected in July), it will cost collectors $50 to grade a card (unless submitted in a bulk value or grading special submission)