Healthy SFC Tendril

Your Star-Flung Carapace has the ability to launch an organic grappling hook. This ability has a number of charges equal to your CON modifier, and are regained upon a short rest.

As a bonus action, you can fire your armor's tendril out up to 30ft to pull yourself to another location, or to pull a creature that is Large or smaller towards you. 
If this is used to target a creature, they must make a DC 14 STR saving throw or be pulled 10ft towards you, or 15ft if they rolled a natural 1.

It turns out that you cannot attach homebrew feats to homebrew items. I was not aware of this until after publishing this, so please ignore it.