Explosive Crystal Spheres

A chamber wired to bloom with violence — six hidden runic nodes wait to call forth jagged crystal spheres that explode into anyone who blunders close.

Manifest Crystal Sphere [Reaction]

Disable DC 25 Thievery (expert) to locate and deface tiny activation runes located at one of the six locations that spawn crystal spheres, or DC 28 Arcana (expert) or DC 28 Occultism (expert) to manipulate the magical energy at one of those locations to render the spheres inert, or dispel magic (3rd level; counteract DC 22) to counteract one of the crystal sphere spawn points.

Level 6 · Complexity Complex

Stealth +15 (expert)

Disable

• Thievery DC 25 (expert) — to locate and deface tiny activation runes located at one of the six locations that spawn crystal spheres
• Arcana DC 28 (expert)
• Occultism DC 28 (expert) — to manipulate the magical energy at one of those locations to render the spheres inert, or dispel magic (3rd level; counteract
• DC 22

AC 24

HP 54 · Hardness 13

Immunities critical hits, fire damage, object immunities, precision damage

Trigger Three or more creatures remain in the Outer Ring for 6 seconds or longer

Effect Six spheres of crystal, each measuring 2 feet in diameter, manifest from thin air and begin quickly floating toward intruders. A sphere manifests at each of the points on the map indicated with a small numeral (labeled 1 through 6); the trap then rolls initiative.