Two more islands from the Farthest Shore, and these might be a doozy of a pair.
Crux Prime
Effects:
1-2: Maelstrom Quarry: Eliminate all treasure coins from this island and up to two masts from this ship.
3-4: Monastery Ruins: Replace one of the treasures loaded by this ship with a Unique Treasure of your choice from outside of the game.
5-6: Starfall Pass: This ship cannot be hit by L-Range cannons until after it is successfully hit.
Flavor: Crux Prime is a small archipelago on the edge of Alliance waters, the largest of which is the site of the Crux Prime base camp. The Archipelago sees almost constant conflict, as it is one of the few safe passages into Alliance waters.
Nexus City
Effects:
1-2: Vault: Randomly move one treasure from every other island in play to this island.
3-4: Nexus Tower: Swap a treasure from this island for a crew on any friendly ship.
5-6: Nexus Core: Roll a D6 twice. The first result indicates the number of treasure coins that may be placed on this island from outside the game. The second result is the value of those treasure coins.
Flavor: Nexus City grew around the roots of Nexus Tower, and now covers much of the island. It is the largest settlement in Alliance waters, and like the tower that rises from its center is a beacon to all members of the Alliance.