Did you like the list, or was there any card from the set you expected to be here
Chittering Dispatcher is the only myriad card that utilizes the tokens leaving play instead of focusing on combat damage or something
The other option costs two black mana, and allows a target player to draw three cards and lose three life
Best of 1 is just a single game, Best of 3 involves sideboarding for the second and third games, which aligns with how Magic tournament play goes
While Solitude is awesome, and the same can be said for Esper Sentinel, players will always be left asking thanks, whats next? Until white gets redundant effects, people will still be left wanting, but furthermore, jealous when colors like green get to explore previous white space (Sanctum Weaver) or space green hasnt yet (Yavimaya, Cradle of Growth)
Mono-black keeps your mana base cheap and consistent