R 1201

Hey folks.

I'd like help to accomodate my players with 2 different options to acquire the Dark Companion alternate class feature from 3.5's Hexblade class.

1. Via a feat
2. Via a Warlock Invocation

Since I know it is considered not good to grant a class feature as a feat (or invocation), I'm not sure where to start with gauging it's relative power valuation.

One thing I thought was interested upon further observation of the Dark Companion ... was that is certainly has its drawbacks:

- Dispellable
- Could take more than 1 or 2 rounds to "reach" an enemy
- Costs 100gp

Thanks for any help in homebrewing this request! Cheers!