Late-game power hitters include both Simba Characters, Mufasa, and Maleficient, Uninvited
Riot lets you pick whether you want your creatures to come into play with haste, an important mechanic when it comes to pushing damage through, or a +1/+1 counter on them when they enter the battlefield, making them bigger and synergizing with cards like Doubling Season
Im about out of words for the week, but I also want to give a mention to Praetors Grasp (already expensive, could get even more so), Fallen Shinobi, Nashi, Moon Sages Scion and Silent-Blade Oni (ninjutsu goodness for the top of their library), Thief of Sanity (more flying and stealing) and Mnemonic Betrayal (the Yawgmoths Will for their yards) as more cards that could see a significant spike in coming days as Tasha begins her non-benevolent reign over all
Only 19 listings on TCGPlayer (and almost all are single copies) means that I think this is due for a correction fairly soon, especially if the deck keeps picking up steam