Gem Spirit

Here’s the stat block for the Gem Spirit, designed as a CR 1 creature:

Armor Class

natural armor

Hit Points

5d6 + 10

Speed

30 ft., burrow 20 ft.

Challenge

200 XP

STR

DEX

CON

INT

WIS

CHA

MOD -1 SAVE -1

MOD +3 SAVE +5

MOD +2 SAVE +2

MOD +0 SAVE +0

MOD +1 SAVE +1

MOD +2 SAVE +4

Skills Stealth +5, Perception +3

Condition Immunities Charmed, Exhaustion, Frightened, Paralyzed, and Poisoned

Senses darkvision 60 ft., passive Perception 13

Languages Primordial, Understands Common but cannot speak

Gem Passage. The Gem Spirit can move through spaces occupied by raw gemstones as if they were difficult terrain. If the spirit ends its turn inside a gemstone, it becomes incorporeal and gains resistance to all damage until the start of its next turn.

Crystalline Form. When the Gem Spirit is struck by a melee weapon, shards of its crystalline body explode outward. The attacker must succeed on a DC 12 Dexterity saving throw or take 4 (1d8) piercing damage.

Shimmering Light. Recharge 5-6. The Gem Spirit emits a dazzling burst of light. Each creature within 15 feet must succeed on a DC 12 Constitution saving throw or be blinded until the end of its next turn.

Actions

Shimmer Strike. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 10 (2d6 + 3) radiant damage.

Gem Resonance. 1/Day. The Gem Spirit resonates with nearby raw gemstones, causing an eruption of energy. Each creature within 10 feet of a gemstone the spirit occupies must make a DC 12 Dexterity saving throw, taking 14 (4d6) thunder damage on a failed save or half as much on a successful one.