Hammerhead Ether-Eel

+6

The hammerhead can breathe air and water.

The hammerhead has advantage on melee attack rolls against any creature that doesn't have all its hit points.

The hammerhead can see 60 feet into the Ethereal Plane when it is on the Material Plane, and vice versa.

The hammerhead has advantage on saving throws against spells and other magical effects.

The hammerhead's weapon attacks are magical.

The hammerhead makes three attacks: one with its bite, one with its slam, and one with its tail.

Melee Weapon Attack: +11 to hit, reach 5 ft., one target. Hit: 27 (4d10+5) piercing damage. If the target is a Large or smaller creature, it must succeed on a DC 19 Dexterity saving throw or be swallowed by the hammerhead. A swallowed creature is considered to be on the Ethereal Plane, it is incapacitated, and it takes 22 (4d10) force damage at the start of each of the hammerhead's turns. A swallowed creature can make a DC 16 Charisma saving throw at the start of each of its turns. On a successful save, the creature reappears in an unoccupied space within 10 feet of the hammerhead. If the hammerhead takes 50 or more damage in a single turn, it must succeed on a DC 22 Constitution saving throw at the end of that turn or regurgitate all swallowed creatures, which reappear in an unoccupied space within 10 feet of the hammerhead. If the hammerhead dies, a swallowed creature can make a DC 10 Charisma saving throw. On a successful save, the creature reappears in an unoccupied space within 10 feet of the hammerhead. On a failed save, the creature is no longer incapacitated, but it is banished to the Ethereal Plane.

Melee Weapon Attack: +11 to hit, reach 5 ft., one target. Hit: 19 (4d6+5) bludgeoning damage, and if the target is a creature, it must succeed on a DC 19 Strength saving throw or be knocked prone. This attack deals double damage to objects and structures.

Melee Weapon Attack: +11 to hit, reach 15 ft., one target. Hit: 23 (4d8+5) force damage.

The hammerhead enters the Ethereal Plane from the Material Plane, or vice versa.

When the hammerhead takes damage from a creature it can see within 120 feet of it, it teleports to an unoccpied space within 5 feet of that creature and immediately makes one slam or tail attack against it.