All four are extremely solid out of the box - each one built to a clear gameplan, with almost no obvious cards you should cut
Are you ready for the next Spoiler from Opus XIII: Crystal Radiance
Midnight Reaper A key card draw engine for Teysa Karlov style aristocrats decks as well as Wilhelt, the Rotcleaver zombie decks, there are only so many cards that do what Midnight Reaper does, so this is a must have for a ton of black decks
Bone Miser Bone Misers a strong discard payoff reminiscent of a reverse Waste Not
What makes Shroofus such a blast to build and play is that he turns anthems and pump spells into board presence with nearly unparalleled speed one-mana acceleration like Llanowar Elves or Elvish Mystic can have you attacking with Shroofus on turn 3 before most players have blockers and then every Saproling token that connects afterward only adds to the growing swarm
In fact, she likes it so much, she has an ability called Symphony of Pain