When attacking with a unit and using Ride The Wind as an action to move Yasuo into the same battlefield, does Yasuo's 'when I attack' effect still trigger?

Ruling: Yes, Yasuo's "when I attack" effect triggers even when moved into the battlefield with Ride The Wind after an attack has already been declared.

Sequence:

• Declare attack with a unit
• Play Ride The Wind as an action to move Yasuo into the same battlefield
• Ride The Wind resolves and Yasuo moves
• After the move, Yasuo's "when I attack" ability triggers and goes on the chain

Nuances:

• Yasuo's ability does not go on the chain at the same time as Ride The Wind; it only triggers after Ride The Wind fully resolves