Azurite Sea enchanteds instead lean heavily into the pirate/seafaring theming of the expansion, with characters, actions, items an locations reimagined against a cartographic background, bearing minamilistic drawings very reminicent of bare sketches
That's two - very strong, and on colorless we should be able to drop artifacts, but more limited
Once Brotherhood Spy's ability has resolved, removing the legendary Assassin (or Assassins) you control from the battlefield or causing them to lose the legendary supertype or Assassin subtype won't cause Brotherhood Spy's ability to stop applying for that turn
(It's an artifact with two generic, Tap, Sacrifice this artifact: You gain 3 life.) Ygra, Eater of All Three generic, one black, one green legendary creature Elemental Cat 6/6 Mythic Rare Ward: Sacrifice a Food
It could even be triggered by casting a spell - the spell would say "When you cast this spell, Discover X"