Turn 2: Play Mountain, followed by Lightning Bolt or Burst Lightning (I prefer Bolt) small creature for 1 black mana for chump blocking if you have it.
EoT, BA gets a quest counter.

Turn 3: Play Island followed by any combination of “burn” cards. Lightning Bolt, Burst Lightning, Blightning, play small creature if available.
EoT, BA gets 2nd quest counter.

Turn 4: Play any mana-producing land. Rinse and Repeat of turn 3
EoT, BA gets 3rd quest counter.

Turn 5: Play any mana-producing land, Followed by Nemesis of Reason.

Turn 6: Swing with Nemesis. Doesn’t matter if it’s blocked or not, just for swinging the defending player mills 10 cards, which activates Bloodchief Ascension’s ability, dealing 20 damage to the defending player and giving you 20 life.

This also works incredibly well with Archive Trap. If the opponent searches their library on turn 4 or after, that’s game because the BA would deal 26 damage to him/her, and you can always hard cast it on turn 5. Now your typical mill deck has become a direct damage deck, with some late-game heavy hitters.

I recently played FNM Constructed at my local shop with a deck based around NoR and Minion Reflector. I came in 3rd of 16, mainly because the top two were running Bloodbraid Elf/Behemoth Sledge decks. In my opinion, NoR actually has the ability to be a staple in many decks. People were going crazy as I had my Reflector out on the 3rd or 4th turn (via Etherium Sculptors), and was milling like a madman. I was throwing Elder Mastery on him for giggles and then people were milling AND discarding. He’s nothing to turn your nose up at by any means.

I’d say it is very likely to see play in both Block and Standard, as it is a solid finisher in control decks in that it probably hits at least as hard as Keiga. You don’t need more than four swings to finish the opponent, so its “virtual power” is much higher than his as-printed stat of a mere three. The difference between this real-deal creature and those terrible ones you mentioned is the huge toughness on the card: it can actually get in a creature rumble and survive, plus it doesn’t need to connect to trigger its ability, just swing. And unlike those terrible spells, the decking is almost incidental, it’s just the secret sneaky way in which they managed to make the card say “When Nemesis of Reason attacks, your opponent loses one-quarter of their life”.

Not a Flagship card; you don’t want to build “the Mill deck” because obviously that is miserable. But as a niche kill card in a non-Faeries U/B deck, such as we will see coming around with the next block rotation to take the Faerie Menace out of Standard at last, it is at least a Role-Player.