Brine-Swollen Deckhand

Waterlogged

Trait

Damage Vulnerability and Resistance Custom

The deckhand has Vulnerability to Fire damage and Resistance to Cold damage.

Amphibious

Trait

Amphibious Custom

The deckhand can breathe air and water.

Amphibious. Standard monster trait for breathing in both air and water.

Brine Burst

Trait Custom

Brine Burst Custom

Poisoned Condition

When reduced to 0 Hit Points, the deckhand bursts. Each creature within 5 feet of it must succeed on a DC 12 Constitution saving throw or have the Poisoned condition until the end of its next turn.

Last Orders

Trait

Insight Rule

Charmed Condition

The deckhand endlessly repeats the last order it received before drowning. It has Advantage on saving throws against being Charmed, and a creature that understands Common can hear the order by succeeding on a DC 10 Wisdom (Insight) check.

Multiattack

Action

The deckhand makes two Slam attacks.

Slam

Action

Grappled Condition

Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 5 (1d6 + 2) Bludgeoning damage plus 2 (1d4) Cold damage. If the target is a creature, it has the Grappled condition (escape DC 12) instead of taking the Cold damage when the deckhand chooses to seize it.

Drowning Grip

Action Custom

Suffocating Rule

Drowning Grip Custom

The deckhand drags one creature it is grappling. If the target is in the deckhand's space or an adjacent flooded space, it must hold its breath; at the start of each of its turns it can hold its breath for 1 + its Constitution modifier minutes before it begins suffocating.

Drowning Grip. Homebrew: the deckhand drags grappled prey into flooded water to force breath-holding.

Seawater Spit

Bonus Action Custom

Seawater Spit Custom

The deckhand spits brine at one creature it can see within 10 feet. The target must succeed on a DC 12 Dexterity saving throw or have Disadvantage on its next attack roll before the end of its next turn.

Brine Lurch

Reaction

Opportunity Attacks Custom

When a creature within 5 feet of the deckhand misses it with a melee attack, the deckhand can move up to 10 feet without provoking Opportunity Attacks.