Does Tryndamere's 'conquer after an attack' ability trigger when he defends via Ride the Wind and wins combat?

Ruling: No, Tryndamere's ability does not trigger when defending via Ride the Wind. The wording "after an attack" requires Tryndamere's owner to have been the attacker, and Tryndamere must be present during that attack for his conquer effects to trigger.

Nuances:

• The phrase "after an attack" (rather than "after a combat") is intentional and distinguishes attacking from defending
• "After a combat" would be redundant since conquering and assigning damage always happen after combat
• The ambiguous wording "an attack" instead of "your attack" or "I attack" likely stems from Origins compatibility