Punishing an opponent for killing a creature feels very good, and Kairi, The Swirling Sky is powerful enough that opponents will have to deal with it at some point
As, even if you dont like what you see, you can always use a shuffle effect to change that
Either way, Repurposing Bay certainly has a winning formula to, at worst, see some heavy experimentation and, at best, dominate multiple MTG formats.
Divide that many drinks amongst any number of players
Many people think of the old-school precons like the Kaalia of the Vast and Edgar Markov decks as highly powerful
Olivia can explode out of nowhere, completely flipping the battlefield and the course of the game