I came up with the idea of a "grappling hook" (just a 30-foot length of rope, and a hook on the end – not sharp, just to hook onto things), and was wondering about its use in combat.
The tricky part is that my character is Dex-based, not Str. My character has 14 Dex and 10 Str. So its use would be to simply attempt to throw an enemy off balance, or impose disadvantage on their next roll, for example.
The use in this situation would have to be finesse-based, potentially, or the goal would be an opposed check vs. the target's Dex (and my Dex, hopefully).
Is there anything in the rules about something like this? Or is it entirely homebrew?
Best Answer
Anything you could do to an enemy with a grappling hook would probably require a strength check
As far as I know, there are no specific rules for using a grappling hook against an enemy in the way you describe, which means that you would be improvising an action, as described in the rule for actions in combat:
The introduction to the DMG gives some guidance on how the DM should adjudicate improvised actions (note: because this is the DMG, "you" refers to the DM):
The example given is in fact very similar to what you're asking about: improvising the use of something that's not a weapon to interfere with an enemy in some way. You can reasonably expect the DM to either ask you for an attack roll (without proficiency) or some kind of ability check in order to use the grappling hook against an enemy in the way you describe, assuming they decide it's even possible.
Unfortunately for your character, if we look in the rules for the kind of things you could conceivably do to an enemy using a grappling hook, we see that they all require rolling some kind of strength check. The most likely candidates are grappling the creature, pulling it toward you, or tripping it to knock it prone. For grappling (emphasis added):
For pulling or tripping, the relevant attack is a shove (emphasis added):
Of course, pulling isn't covered by this, but it's obviously mechanically similar to pushing, with the only difference being the direction of movement. It stands to reason that if pushing is strength-based, then pulling ought to be as well.
In summary, if you try to use of a grappling hook in combat to grab, pull, or trip an enemy, your DM may allow this and make a ruling about how to resolve the action. Based on the similarity to existing attack types that are defined in the rules (grapple and shove), it is mostly likely that your use of the grappling hook will require a strength check.