Cloth Blade (4e Feat)
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Cloth Blade [Racial]
With enough practice, you can learn to shape your fibers into a sharpened blade, allowing you to make small daggers or large swords.
Benefit: As a free action you can form an arm into a weapon with which you are proficient. It has a +3 proficiency It can be either a one-handed weapon in the light blade group or a one-handed weapon in the heavy blade group. If it is in the light blade group, it will deal 1d4 damage and have the defensive property, if it is a heavy blade it will deal 1d6 damage. You cannot hold anything in the arm that you form into a weapon. You can enchant and disenchant your cloth blade. If it is disenchanted, it does not turn to dust.