Required level for spell to take affect?

[trevius]

Have you tried using the spell editor in the tools section by Ailia/Bleh? The editor is extremely useful for easily editing spell files. I haven't tried making a min level for a buff to land, but it probably wouldn't be hard to figure out how to do that using that tool. All you would need to do is find a spell that you know already has a min level for it to land, and then check which value it is that set that.