As the Maze of Ith player, if you are being attacked by a Changeling Outcast or Mothdust Changeling, youre best to just take the hit than to expose yourself to a potential Ninja being put into play
These elder dragons of Arcavios founded their unique colleges, take time to reflect on their professors and students, and were born from the magical combination of two planes
Card Advantage, Permission, and Threats Mana production aside, the cards in a blue-based control deck can be separated into one of three classes, card advantage spells, which allow you to draw extra cards or search for cards and add them to your hand, permission spells that deny your opponent their plays, or cheap threats which can close out the game once the opponent's game plan has been thwarted
If you have control over trigger abilities, and there are simultaneous triggers during a game, you'll see a screen like this: In the case above, I've just attacked with multiple units (during a Lord of the Rings Draft game)
I recommend swapping this out for Aether Meltdown if you find Pirate decks are popular in your meta