CR 7 – Type – Monstrosity – Algal Behemoth
Tier 2 play
**Monster Name**: Algal Behemoth
**Size, Type, Alignment**: Huge Monstrosity, Unaligned
**Core Stats**: Armor Class (AC) 15, Hit Points (HP) 120, Speed 30 ft.
**Ability Scores**:
Strength 20 (+5),
Dexterity 8 (-1),
Constitution 18 (+4),
Intelligence 1 (-5),
Wisdom 12 (+1),
Charisma 3 (-4)
**Proficiencies**: Strength Saving Throws +8, Constitution Saving Throws +7; Skills: Perception +4
Damage Resistances: Bludgeoning, Piercing, and Slashing from non-magical attacks
Damage Immunities: Poison, Psychic
Condition Immunities: Charmed, Frightened, Paralyzed, Poisoned
**Senses**: Blindsight 60 ft., Darkvision 60 ft., Passive Perception 14
**Languages**: Understands Common but cannot speak
**Challenge Rating (CR)**: 7
**Special Abilities**:
– **Algal Regeneration**: The Algal Behemoth regains 10 HP at the start of its turn if it has at least 1 HP.
– **Spore Burst (Recharge 5-6)**: The behemoth releases a cloud of spores in a 30-foot radius. Creatures in the area must succeed on a DC 15 Constitution saving throw or become poisoned for 1 minute. A poisoned creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.
**Actions**:
– **Multiattack**: The Algal Behemoth makes two Slam attacks.
– **Slam**: +8 to hit, reach 15 ft., one target. Hit: 22 (4d6 + 5) bludgeoning damage.
– **Thick Mucus**: The behemoth slams its body down, creating difficult terrain in a 15-foot radius around it. This area remains difficult terrain until the end of the behemoth's next turn.
**Description**: The Algal Behemoth is a massive creature formed from a patchwork of dense green algae and bioluminescent fungi, found near geothermal vents. It was born of nature’s will, aiming to protect its home from intruders. The behemoth exhibits a slow yet deliberate demeanor, relying on brute strength and toxic spores to ward off threats. In combat, it uses its size and regenerative abilities to outlast opponents while creating hazardous effects that force them into unfavorable positions. It is a guardian of the ecosystem it inhabits, viewing adventurers as potential threats to its watery domain.