Multiattack

The hound of Tindalos makes two claw attacks and one bite attack. It can make one tongue attack in place of its two claw attacks.

Bite

Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 14 (3d6 + 4) piercing damage.

Claw

Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) slashing damage.

Tongue

Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 7 (1d6 + 4) piercing damage plus 7 (2d6) necrotic damage. The target's hp maximum is reduced by an amount equal to the necrotic damage taken. The reduction lasts until the target finishes a long rest. The target dies if this effect reduces its hp maximum to 0.

Hunter of the Lost

The hound can transport itself to a different plane of existence. This works like the plane shift spell, except the hound can only affect itself, not other creatures, and can't use it to banish an unwilling creature to another plane.