If Yellow Viktor and a normal non-token unit both die in a showdown, can you choose to have the other unit die first so Viktor triggers and creates a token before he dies?

Ruling: No, you cannot get a token from Viktor in this situation. All units die at the same time in combat, so Viktor is already dead when the other unit dies and cannot trigger.

Nuances:

• You can decide which unit to use effects like Zhonya's on because they die simultaneously, but you don't decide the order in which they die
• Viktor must be alive when another unit dies to trigger his ability