Cluster Heart

A lattice of resonant crystal that hums with gathering force, drawing the air taut around it until it lashes out at anything foolish enough to linger close.

Crystal Surge [Reaction] (force)

Level 18 · Complexity Simple

Stealth DC 45 (master) — (master) to hear or feel the energy coalescing

Disable

• Nature DC 45 (master) — to chip away at the crystal and disrupt its resonance
• Thievery DC 42 (master) — to carefully detach the crystals and then safely smash them

AC 39

HP 300 · Hardness 15

Immunities critical hits, object immunities, precision damage · Weaknesses sonic 20 · Resistances _disintegrate_ deals double damage, ignoring Hardness, rather than destroying the cluster heart outright

Trigger A non-elemental creature ends its turn adjacent to the cluster heart

Effect The heart extends shards of crystal imbued with force, like a jabbing blade, and deals 3d10+20 force damage and 3d10+20 piercing damage to all creatures in a 20-foot radius (DC 40 basic Reflex save). A creature who takes piercing damage from the surge is exposed to crystal corruption.

Reset Once the cluster heart uses its reaction, it automatically resets after 1 minute. As long as the cluster heart has 150 or more Hit Points, it recovers 50 per day.