This provides you and your clones the Mirage Cloak Effect, granting your Axe skill 1 the Imaginary Axes Ambush skill
Additional Notes
In the Chaos trait line, 1st trait, doesn't help because we don't use any (derp) so take anything else in that column. In the build screenshots above, has been selected.
In the Chaos trait line, 3rd trait, Prismatic Undertaking is selected but helps a little bit more after you land an interrupt.