Yes, I'm studying Zombies and dragons as well. Scrolls isn't what the Samurai need IMO but I don't know everything and I'd be happy if someone could break the card. I mean, I'm always learning new stuff.
It is an interesting thought. It would give the samurai more swarm speed and potentially give access to Allure of Darkness but I don't know frankly. Let me do some thinking okay?
Research complete. I worry about anything that takes summons away from the samurai. If perhaps, we still had multiple Reasoning then perhaps I'd be more optimistic.
My advice is to stock up on them as best you can, because I think they will be in high demand.