Pore of Hell

Effect

A burning sigil is inscribed on a solid surface, its flames dying to a low ember glow after a few moments. While the invocation remains active, the caster may at any time trigger the pore as an Instant action, causing it to vomit out flames and obsidian splinters at everything within ten feet of the sigil. The caster may choose to have the pore activate automatically when a target comes within three feet of it. The pore inflicts 1d6 damage per hit die or level of the caster, to a maximum of 10d6. Lesser foes get no saving throw against the damage, while worthy foes can make a Hardiness save to resist the explosion unharmed. Once discharged, the pore vanishes. A second pore cannot be laid down within the area of effect of the first.