Telekinetic Storm

Telekinetic Storm is an Esper assault ability available at level 8.

Trash Incinerator
Against tightly packed groups of PvE or "trash" instance mobs, Telekinetic Storm is devastating. Able to hit multiple enemies at once, and following the original target it had latched onto, you can easily use this to clear rooms and make areas much safer. Best combined with an ability like Psychic Frenzy or Blade Dance to herd into the telegraph while still doing damage, and/or a tank who can lure more mobs into the circle of sharp, pointy death.

The ability also stacks, so if the player can generate Psi Points fast enough, they can fire several storms back-to-back. The stacking damage oftentimes causes enemies to just melt away in seconds.