The area is famous for its udon (in Kagawa), and the beautiful Dogo Onsen hot springs (in Ehime)
You could leave in both of these instead, especially Embrace the Unknown, as it is a new card, but I like the opportunities the other two give
Blue has access to a ton of powerful cards for Commander, so you can make your Gogo deck as janky (Bracket 2) or as deadly (Bracket 4 or 5) as you want
Facilier, Agent Provocateur was one of amethysts strongest characters, thanks to his Into the Shadows ability, which gives you the option to return any of your banished glimmers back to your hand
Its role in the games is not tied to any legendary status but rather as a reliable and stylish member of a player's team, offering both aesthetic appeal and competitive utility
This is especially true later in the game