Looking at this item and several others coming out of the Tomb, they all seem to be a focus on one particular resist and the rest are just icing on the cake.
This one is fire and I saw another that is +25 magic resistance. I think these are now falling in line with Vi's new outlook on resists and symbolic of their new importance in the world.
It looks like they are setting it up so higher level characters will be needing to swap out such items to best counter what they expect to run into.
Nice item for HP and Mana. The saves are nice for lower lvls. But VI could have done a little better unless they are going to loosen the caps on most everything for the whole realm, (not just the PoP)