Long and metallic, this serpentine construction resembles a mechanical eel with several paddle-like limbs.
AC 28, touch 14, flat-footed 22 (+4 Dex, +2 dodge, +14 natural, -2 size)
Speed 30 ft., swim 60 ft.
Str 33, Dex 18, Con —, Int —, Wis 11, Cha 1
A clockwork leviathan's breath weapon is a powerful jet of scorching steam—it functions equally well above and under water.
A clockwork leviathan deals an additional 1d8+16 points of slashing damage when it makes a successful grapple check because of the myriad twisting gears and churning pistons that make up its jagged underbelly.
A clockwork leviathan's interior is filled with injurious grinding gears and superheated water—in addition to taking damage, a swallowed creature must hold its breath or risk drowning as long as it remains inside a clockwork leviathan's "stomach."