Tentacle (Kraken summon)
Up to six of them can be created at once, as long as there are empty water tiles around the Kraken. They cannot move normally, only able to Dive from one water tile to another, but with LargeWaterTrail they can create more water around their destinations. They also have Constrict and StrongPheromones onAttack, making them one of the few creatures able to deal Lust Damage.
Note that only the Tentacles in the boss fight are invulnerable to damage.