From LSWiki

The ability to visually displace yourself, making yourself harder to hit and granting a bonus to hit your target.

Usage

concentrate on visually displacing myself
concentrate on visually replacing myself

Notes:

• The charm functions similarly to, and stacks with, a glomschal and will increase your passive defense rating and your attack rating.
• Established displacement enchantments gain additional power mainly from dirty fighting, stealth, and relevant fieldcraft skills, with illusion, and tactics skills providing a much smaller bonus.