Ki Strike

Monk Class Ability (Supernatural, 4th Level)

At 4th level, a monk’s unarmed attacks are empowered with ki. Her unarmed attacks are treated as magic weapons for the purpose of dealing damage to creatures with damage reduction. Ki strike improves with the character’s monk level.
At 10th level, her unarmed attacks are also treated as lawful weapons for the purpose of dealing damage to creatures with damage reduction.
At 16th level, her unarmed attacks are treated as adamantine weapons for the purpose of dealing damage to creatures with damage reduction and bypassing hardness.