Does Qiyana's conquer trigger happen if she dies in combat but you still conquer the battlefield?

Ruling: Qiyana needs to stay alive at the conquer for her ability to trigger. If she dies during the same game action as the conquer (such as during combat damage allocation), her trigger does not apply.

Nuances:

• A game object cannot evaluate its trigger condition if it leaves the zone that its trigger is active from at the same time that its trigger is satisfied.
• This applies when units die during the same game action that would satisfy their trigger condition.