Den of Vermin

At 15th level, you may summon a host of insects. This power acts as creeping doom, but the swarms' poison inflicts Con damage and any creature other than you sharing a space with a swarm is entangled. You may use this ability once per day. Creeping Doom: This spell summons to your side 4 spider swarms. The summoned swarms appear where you designate and act according to their initiative check results. They attack your opponents to the best of their ability. The swarms have 60 hit points each and deal 4d6 points of damage with their swarm attack plus poison and distraction. The save to resist their poison and distraction effects is equal to the save DC of this spell. Creatures caught in multiple swarms only take damage and make saves once. Distraction: A creature with this ability can nauseate the creatures that it damages. Any living creature that takes damage from a creature with the distraction ability is nauseated for 1 round; a Fortitude save negates the effect. Poison: Swarm — injury; Fortitude save; frequency: 1/round for 6 rounds; effect: 1d4 Dex; cure: 1 save.