I've definitely had BoW and Ironfist before, and I've definitely had Executor and Protector before. I wouldn't be surprised if I've had all four in the same game at some point, but I can't find a .flg to prove it.
Ring of immunity isn't nearly as bad as Perion's plate. Immunities aren't that important in the grand scheme of things, but even ignoring that, [+5,+5] on a ring slot is still pretty fantastic. It's an above average artifact, I'd say. Perion's is really useless for smiths because you can easily forge up something way, way, better.
Why weren't you using Purifier, out of curiousity? Unless your eternium hammer was a murderous hammer of devastation or something, Purifier is probably a better weapon.
Hoping to win with every class, doomed. Archer, Barbarian, Bard, Beastfighter, Druid, Elementalist, Farmer, Fighter, Monk, and ULE Priest down.