Arc Soul

"Your rift now grants you or any ally that uses it an Arc Soul to aid in battle."

Arc Soul is a Stormcaller passive ability.

Ability

 * This ability triggers automatically when either the caster or an allied player steps into the caster's rift.
 * Arc Souls fire 3-bursts of Arc bullets once every 2 seconds while enemies are within range.
 * Arc Souls last for 8 seconds after a Guardian steps out of the Warlock's Rift.

Trivia

 * Some fans speculated that Shrieker is a Hive version of the Arc Soul.