Goldnight Castigator is an inherently good card, but it does have a lot of competition at the four-spot
#5 Zapdos ex SAR (21,800 / ~$149) The strongest of the three Legendary Bird SARs
What Makes These Special Unless were playing Manaless Dredge, the foundation of Magic rests on a balance of lands and nonland spells
Flavor Text "Sharing tea with a fascinating stranger is one of life's true delights." Number 314 Language English Legal Formats Brawl, Commander, Competitive Brawl, Historic, Legacy, Timeless, Vintage Not Legal Formats Alchemy, Modern, Pauper, Pioneer, Standard Rulings (10/4/2004) Because the "search" requires you to find a card with certain characteristics, you don't have to find the card if you don't want to.
Three ETBs, at minimum even just choosing Araumis creature type for each, you get to draw four and discard one
Twenty-one total Lessons is all I could find that was even a little bit playable, and of those, several wouldn't be if you had to put them in the main deck