Redundancy and quick diminishing returns hurt the value of those groups of cards
In a two-player game, Secret Rendezvous is worse than playing no card at all, but in a four-player game, its a great way to start an alliance to join up against a common enemy
You could have a deck made out of cheap Vampires (both monetarily and mana-wise) and still perform great because of how easy it is to flood the battlefield
You can have up to 15 different lesson cards in your sideboard in BO3, but that wont allow you to have any other regular sideboard cards
This deck has eight counterspells in the late game, three Narset Transcendent, powerful win conditions, and killer card draw
In fact, theres way too many for me to give them all a serious analysis in todays review