- Can I play Flannery if my opponent only has a Special Energy in play but no Stadium, or vice versa?
- Yes, you can play Flannery as long as there's at least 1 thing to discard. However, it's not optional, so you must discard a Special Energy and a Stadium if both are in play.
Source:
Chilling Reign FAQ; TPCi Rules Team (2021-06-17)