You can only get 75 cells for Cain. This means you have to either: get the cell that are before the scroll, buy a cain's rise chest, or wait for another event.
Monster Legends Community - Have you collected all the pieces? Are you ready to enter Cain's Hell progressive to have a final showdown with Cain himself? To motivate you a bit more,
SOLD - Monster legends, 100k+ mp, rank 5 elites and warmasters - EpicNPC
Gwalirn | Monster Legends Competitive Wiki | Fandom
Selling - Monster Legends very decent account - EpicNPC
Cain | Monster Legends Wiki | Fandom
Cain's Sword | Monster Legends Competitive Wiki | Fandom