# Boomer

*Medium* *Plant* *unaligned*

- **Armor Class:** 7 (natural armor)
- **Hit Points:** 22 (4d8+4)
- **Speed:** walk 0 ft.
- **Challenge Rating:** 1/2 (100 XP)
- **Source:** Tome of Beasts 2, page 157

| STR | DEX | CON | INT | WIS | CHA |
| --- | --- | --- | --- | --- | --- |
| 1 (-5) | 1 (-5) | 12 (+1) | 1 (-5) | 3 (-4) | 1 (-5) |

- **Skills:** 
- **Damage Immunities:** thunder
- **Condition Immunities:** blinded, deafened, frightened
- **Senses:** blindsight 30 ft. (blind beyond this radius), passive Perception 6
- **Languages:** —

### Special Abilities

- **Deafening Boom:** When a creature hits the boomer with a melee attack, the boomer releases a blast of sound. Each creature within 10 feet of the boomer that can hear it must make a DC 12 Constitution saving throw. On a failure, a creature takes 5 (2d4) thunder damage and is incapacitated until the end of its next turn. On a success, a creature takes half the damage and isn't incapacitated.
- **Death Burst:** When it dies, the boomer explodes in a cacophonous burst. Each creature within 30 feet of the boomer that can hear it must make a DC 12 Constitution saving throw. On a failure, a creature takes 7 (2d6) thunder damage and is deafened for 1 minute. On a success, a creature takes half the damage and isn't deafened.
- **False Appearance:** While the boomer remains motionless, it is indistinguishable from an ordinary fungus.

### Reactions

- **Shriek:** If bright light or a creature is within 30 feet of the boomer, it emits a shriek audible within 300 feet of it. The boomer continues to shriek until the disturbance moves out of range and for 1d4 of the boomer's turns afterward.