Ignition

Ignition is an Inferno ability in Esper.

Availability
ignition is immediately available to the Cleric class, but can otherwise be researched by either Oliva or Cordelia.

Characteristics
While Ignition's per-hit damage is moderate at best, it benefits from the fastest cooldown and lowest mana cost of any Inferno ability, making its sustained damage output remarkably high and consistent. It's built-in crowd control effect also make it exceptionally good at kiting or harassing. Ignition can be used to quickly apply Burn stacks for Firestorm. Its slowing effect can also be increased by stacking other slowing effects (such as from other abilities).

Ignition's biggest drawback is its extremely limited area-of-effect damage, which goes against the playstyle of other Inferno abilities.