When a showdown is triggered during the resolution of Promising Future (by playing Dragon's Rage and moving an enemy unit to an occupied battlefield), does the showdown happen immediately or after both players have played their cards from Promising Future?

Ruling: The showdown does not happen immediately. It becomes pending and will start once the chain is empty (after Promising Future is fully resolved and both players have played their chosen cards).

Sequence:

• Both players choose cards from Promising Future
• Both players play their chosen cards
• Promising Future fully resolves
• The chain becomes empty
• The pending showdown then starts