How chaos work if the target is alone ie. Troop or others are dead ?

[CondorHero]

Chaos merely does the following:
It changes target from [ally] to [enemy].

Example 1) Restore. Instead of restoring your ally, it will restore the enemy.
Example 2) Blessed light. Heal your enemies
Example 3) Apollo Shield. Apollo the enemy.

[care90]

depends what skills he uses