The Circle of Thorns Damage Barrier enchantment should include a Magebind +2 trait to match the other enchantments. You might exempt the Druid from this added cost to make it more unique, but not sure that is worth it. Probably best to keep them all these enchantments functioning the same relative to Magebind.
I think the archer is too powerful with both quick and full ranged attacks. Perhaps removing the Soldier subtype would bring him down the right amount to balance him.
