Does Yone's ability work with Skyfall (does Yone deal damage when holding with Skyfall equipped)?

Ruling: Yone's ability does not work with Skyfall because you cannot hold an open battlefield.

Nuances:

• Skyfall changes the word "conquer" to "hold" in Yone's ability text
• Yone's ability specifically requires conquering/holding an "open battlefield"
• Since you cannot hold an open battlefield, the modified ability cannot trigger