Adamantine Bones

(Tome of Battle: The Book of Nine Swords, page 81, DnD 3.5)

Stone Dragon (Strike)

Level: ; Crusader 8; Swordsage 8; Warblade 8
Prerequisite: Three Stone Dragon maneuvers
Casting Time: 1 standard action
Range: Personal
Target: You
Duration: 1 round

You are an impenetrable tower of defiance on the battlefield. Attacking you is as fruitless as striking a mountain with a walking stick.

The supreme focus, mental toughness, and physical durability taught by the Stone Dragon discipline culminate in this powerful combat maneuver. When you make a successful attack, your mind focuses your body into the equivalent of a living shard of rock. Even the most ferocious attacks bounce off you without harm.

As part of this maneuver, you make a single melee attack. If this attack hits, you gain damage reduction 20/adamantine for 1 round.