Adamantine Heart (3.5e Monk Fighting Style)
From D&D Wiki
Monks of the Adamantine Heart are indomitable fighters, masters of the art of hardening oneself to the outside world and the dangers it throws at them. Monks of the Adamantine Heart must have come back from death, as the act of returning from the gates of death are considered a sacred right of passage for the order of the Adamantine Heart. They are always psionically gifted. Monks of the Adamantine Heart are considered incredibly dangerous, as they can harness their psionics to harden their bodies to even the harshest damage.
1st-Level Skill Bonus: Intimidate.
1st-Level Feat: Wild Talent.
2nd-Level Feat: Endurance.
6th-Level Feat: Diehard.
15th-Level Bonus Ability: Adamantine Soul: A monk of the Adamantine Heart Style becomes immune to critical hits so long as they are psionically focused. This ability becomes inactive once the psionic focus has been expended, until the monk becomes psionically focused again.
Prerequisites: Psicraft 15 ranks, Intimidation 10 ranks, BAB +10, must have died and returned to life during the same round.