In a showdown, if the opponent's unit leaves the battlefield after I pass priority, can the opponent still play actions before the showdown ends?

Ruling: Yes, the opponent can still play actions. A showdown ends the same way combat always would: once both players pass focus in sequence. Even if the opponent's unit is moved off the battlefield, if you pass again, the opponent can still play their action before the showdown resolves.

Sequence:

• Player initiates showdown and passes priority
• Opponent can play actions (even if their unit leaves the battlefield)
• Showdown only ends when both players pass focus in sequence
• After both pass, instead of going to combat damage, the game goes right to the resolution step

Nuances:

• You can play as many actions as you want during a showdown until everyone passes while the chain is empty
• Each action needs to be the first link on the chain (cannot use them as reactions)