The stuff thats normally tossed aside during a draft (lands and tokens) was worth money, while the actual rares and mythics were pretty much worthless
Reasonably, Jodah, the Unifier, Dryad of the Ilysian Grove, and a Land, might meet the requirements to just win on the spot
You can also just slot this guy into Mono-Black Devotion with a splash (instead of Desecration Demon, perhaps?) where he does a whole lot more than Erebos, God of the Dead
See Viewing cards in different zones for details
Experimental Lab // Staff Room is a solid option for counters decks, but at this point, we have so many solid options that its entirely based on flavor and what you have in your collection really
Theyre not ridiculous on their own, but the issue is the bit of text that comes before all of that