By level six, Barbarians on the path of the Beast don’t need magical weapons to make magical attacks, can climb as if permanently affected by Spider Climb, and can breathe underwater. This frees up their three magic item attunement slots for all kinds of fun Magic Rings and Wondrous item...
(In particular, notice that the "Legendary" item is strictly worse than the "Very Rare" item! That's pretty strong evidence that at least one of them has the wrong rarity.) Instead, we might compare this item to the "Gloves of Soul Catching", which I found while browsing...
A custom item that modifies the spell misdirection with the feats Chain Spell (CAr 76), Extend Spell (PH 94), and Heighten Spell (PH 95) is even more expensive than the items above, but a friendly wizard with just a staff of chained misdirection (34,150 gp; 4 lbs.) applies his own...
In a different custom arena for each Elimination round of play, so you never play in the same arena twice. I think I have a good build to do a pretty decent job in the tournament with a good chance for massive damage but also a good bit of ability to mitigate and hand...