If the following things happen in order...
- I cast Storm Herald, returning an Aura from my graveyard attached to a creature
- Before the next end step, Storm Herald leaves the battlefield
- Before the next end step, the Aura leaves the battlefield (into a zone other than exile)
...what happens? To put it another way: is the text on Storm Herald "If those Auras would leave the battlefield, exile them instead of putting them anywhere else" a continuous effect, or rules text that applies only while the creature is on the battlefield? The card has a ruling that clarifies what happens if another effect exiles a returned Aura, but not what happens if it is destroyed or returned to its owner's hand.