What is the Seal of Orichalcos's effect?

I'm not sure if the anime was 100% consistent, but I think this is all the effects - all your monsters increase their attack and defense by 500. You can place monsters in your Spell and Trap Zone, and if they are behind a monster in the monster zone, they can't be attacked. Seal of Orichalcos cannot be destroyed, negated or removed from the field. The loser of the duel loses their soul.