You weave a song of illusion, causing duplicates to appear next to your allies. The duplicates try to intercept enemy attacks and disappear when they succeed.
Each target gains two illusory duplicates of him-or herself that lasts until the end of the encounter. Until the duplicates disappear, the duplicates share the target's space and move with him or her. In addition, the target gains a +4 power bonus to AC. When an attack against AC misses the target, one of that target's duplicates disappears, and the power bonus to AC decreases by 2.