Originally Posted by Tales
Echo Slam (A0DH)
The base of this spell is Fan of Knives, which provides the initial 165/230/285 damage. Note that the skill tooltip says this skill does 200/275/350, and that's because every unit is also affected by its own echo.
When its effect is started, the trigger counts every enemy non structure non dummy unit in a 500 range from Raigor (note that the trigger does not care if the enemy unit is alive or dead). Then, for each of those units, create a dummy unit on top of the enemy, give them a Fan of knives ability with its level equal to that of Raigor's Earthshock and make the unit cast the spell.
The Fan of Knives the dummy units have does 35/45/65 damage in a 500 AoE. Remember: This skill can Echo of bodies. If an enemy is spell immune when this happens, only the 165/230/285 damage will happen and the other damage will be prevented.