The Legends of Kamigawa: Neon Dynasty The return to Kamigawa reveals a plane much changed since our last visit
At four mana its priced to fit into controlling and aggressive decks alike, and the fact that you can get it back off of either your opponents creatures dying or your own is huge for making it work in either strategy
Plus, in the right deck, you can still often cast Thought Monitor for just one mana, although thats more difficult to pull off
Korvold, Fae-Cursed King is a five-mana black, red and green 4/4 with Flying
While a 3/2 for four mana isnt great, the ability to counter a wide range of effects (spells, activated abilities and triggered abilities) or destroy a creature or planeswalker when Ertai enters makes this card an amazing Swiss Army knife that can answer a number of kill-on-sight threats, often in a surprising way, as the fact that this card counters triggered abilities can really stymy a foes game plan in unexpected ways