Blue decks are going to want a way to get the first poison counter onto an opponent so they can start proliferating, and this can easily help you get in for the last few points of damage or poison
2 John Silver - Stern Captain 194/204, Floodborn, Steel Treasure Planet 's cyborg pirate villain, John Silver, is a natural for the Azurite Seas set and its pirate focus
Here we have one of the flagship cards of the set (though it isn't actually a spacecraft)
Captain Lannery Storm and Goldspan Dragon can get you the Treasure tokens you need while Falkenrath Celebrants and Blood Servitor can give you Blood tokens
If you can get your Squirrel engine moving quickly, you could be triggering this ability multiple times per turn, which puts you in a good position to then attack other players and leave yourself open to swingbacks without major repercussions
When the first major rotation happened, Year 1 cards (Sets 1 through 4) rotated out of the Core competitive scene