I think we already know four of the scrolls in Decay though. From the patch notes for 0.72 (October 4th):
- Lifestealer (Order) has been temporarily removed.
- Mire Curse (Growth) has been temporarily removed.
- Bitter Root (Growth) has been temporarily removed.
- Infected Gravelock (Energy) has been temporarily removed.
Given the theme of these scrolls and that they already had assets implemented, it seems very likely that they got moved into Decay rather than removed, hence the "temporarily".
Ohhh, good catch! I think you're right there! I was really disapointed when my infected gravelocks dissapeared, but now i'm :)