Talk:Items/@comment-93.47.217.28-20190130061321/@comment-25435121-20190130121731

The description on Zera in the event news indicates it will be usable for all Demon Realm boosters.

"From the news item: "The [Zera] item ... is a Rebirth Material that can be used for cards that possess SP Demon Realm Skill"

but yeah, we don't actually know if they'll be any other cards that use that item.