Open two patches of sucking mud on empty squares: any enemy piece except a king that steps onto one is stuck fast for its next 3 turns instead of removed. The mud stays for the rest of the game.
You draft Quagmire in Buff mode. Activated: you choose when to use it, and using it is your move for that turn.
As a tempo card, it buys time: an extra move, a skip, or a freeze.
“It does not swallow you. It just will not let go.”