Monster Trove: Old Fears and Hungry Things
Umibozu
Gargantuan
About
On a calm night the sea rises into a black, bald head taller than a mast. The Umibozu asks for a barrel, and anyone who gives it one with a bottom soon watches the creature fill the ship faster than pumps can empty it.
Stats
HP
245
AC
18
DR
5
Attacks
1
Attack:
5d8+6
Save Rolls
Quick
2
Tough
8
Mind
5
Default Save TN (based on HP): 5
Traits
Alignment:
Impartial Vile (Schemer)
Intelligence:
Bright (11-12)
Magic Resistance:
+3 to saves against spells
Special Attack
Fill the Ship: a vessel within 60 ft takes on enough water to lose one quarter of its movement each round. After 4 rounds it sinks. Black Hand: bludgeoning, melee 30 ft, +6 to hit, 5d8+6.
Special Defense
Bottomless Barrel: giving the Umibozu a barrel with no bottom satisfies the request but gives it no means to sink the ship. It makes a Mind save; on a failed save it sinks beneath the sea for the night. It has DR 6 while touching the ocean and DR 2 when separated from it.