The description mentions there are up to 13 unique boons copied, but there are only 11 existing boons (for now):
Swifness, Regeneration, Might, Fury, Protection, Vigor, Quickness, Aegis, Resistance, Retaliation, Stability.
There are 13 unique conditions, I think the 2 got mixed up. Of course not game breaking, just a little mention.