Interestingly, one of the Duskmourn: House of Horror Commander decks actually has a two-card infinite combo baked into the deck
Mind's Eye has established itself as one of the best card drawing engines of all time for casual Magic , multiplayer, Commander, or any other Insert-Your-Casual-Format-Here
For example, starting with a two-drop Ichor Wellspring you can get a three-drop like Chromatic Lantern if you need to smooth your mana or a combo piece like Ashnod's Altar or Phyrexian Altar or Crucible of Worlds
Released as part of Magic: The Gathering's Fallout lineup back in 2024, these products were, back then, the fastest-selling Commander decks of all time (though they have since been eclipsed by MTG's new Final Fantasy set)
Efficient Card Draw The first category of cards that are worth discussing are the hyper-efficient card advantage engines that are especially powerful in a multiplayer setting