Curse of Strahd
Uses a deck of cards that are handed out at the start of combat. Your card denotes your place in the action. It counts down from Ace to two.
Ties are resolved in reverse suit alphabetical order.
There are four unique cards. They have a special ability usable once per round and allow the holder to act at any time.
The Lovers – You may reward another player with a point of inspiration to be used this turn.
Fool – You have advantage on all rolls.
Death – You may take an extra action.
The Tower – You have disadvantage on all rolls.