The Warlock subclass The Fathomless has an ability called Tentacle of the Deeps that reads:

You can magically summon a spectral tentacle that strikes at your foes. As a bonus action, you create a 10-foot-long tentacle at a point you can see within 60 feet of you. The tentacle lasts for 1 minute or until you use this feature to create another tentacle. When you create the tentacle, you can make a melee spell attack against one creature within 10 feet of it. On a hit, the target takes 1d8 cold damage, and its speed is reduced by 10 feet until the start of your next turn. When you reach 10th level in this class, the damage increases to 2d8. As a bonus action on your turn, you can move the tentacle up to 30 feet and repeat the attack. You can summon the tentacle a number of times equal to your proficiency bonus, and you regain all expended uses when you finish a long rest.

Would that be able to stand on the surface of water?

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    – ESCE
    Feb 13, 2021 at 0:37

1 Answer 1


On the surface, under the surface, over the surface

The limit of the spell is “a point you can see” - if you can see it, you can target it.

Oh, and a clear path to the target per the general rule for targeting.

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    \$\begingroup\$ notably, you could also summon the tentacle in midair - might be worth clarifying that. Lore-wise, the tentacle could be coming from some kind of rift, so this would make sense. \$\endgroup\$ Feb 13, 2021 at 12:38

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