Is the battlefield considered empty for Yone's ability if Stormbringer is used to move Yone in and there are units on the battlefield that get cleared by Stormbringer?

Ruling: The answer is currently unknown and under discussion.

Nuances:

• This question relates to timing of when the battlefield is checked for being "empty" relative to Stormbringer's clearing effect
• There is a relevant thread discussing this interaction but no definitive ruling has been established