Our internal description of the spell effect that's improved by the Extended Swarm AA is PetSwarm.
AFFECTNUMBER 152
AFFECTNAME PetSwarm
DESCRIPTION Summons Base effect 1 NPCs to attack the caster's target for Affect Cap seconds. NPC is specified in NPC_FILENAME.
According to the AA's data, it should add time to any effect that uses the PetSwarm SPA.
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