Does Yasuo Remorseful's ability trigger when he is moved to an occupied battlefield, and if so, how does it interact with Mask of Foresight's timing?

Ruling: Yasuo Remorseful's ability triggers when a showdown starts, not on the move itself. When moved to an occupied battlefield, this starts a combat showdown and triggers his ability to deal damage equal to his might.

Sequence:

• When Yasuo is moved to an occupied battlefield, a combat showdown starts
• Multiple "when" effects trigger simultaneously (Yasuo's ability and Mask of Foresight)
• The controller of the triggers chooses the order to resolve them
• If Mask of Foresight resolves first, Yasuo gets +1 might before his damage ability resolves
• This allows Yasuo to deal the increased might as damage, then use that same might value for combat damage

Nuances:

• If the opponent controls both Yasuo (via the move) and Mask of Foresight, they choose the trigger order, potentially allowing them to trigger the mask first so a defending unit survives Yasuo's damage effect