If it is ECL 19, just be a Jovoc (MMII) that gets a retributive aura. And then wear an Amulet of Retribution (BoED). Anyone hits you, the damage is divided in half by the amulet between the two of you (no save, no SR). Then your aura subjects them to whatever damage you take, or 1/2 on a successful save.
A Jovoc has crap for INT & CHA unfortunately, but you could combine with Cleric and/or Crusader for decent tankage.