Each token created by Multiversal Incursion copies exactly what was printed on the original creature and nothing else, with the listed exception (unless that creature is copying something else
Then if there are twenty or more cards in your graveyard, you may play the exiled card without paying its mana cost
For example, removing a key creature , stripping hands, and forcing awkward decisions add up quickly
Typically, this is where I talk about the Commander(s), which I will, but this idea began in reverse, so Bottoms up
Chain enough spells together and Underworld Breach can end games in the same explosive fashion as Yawgmoths Will
Borsalino7 and Hound Blaze are amazing at putting pressure and removing opponents' boards without destroying them