Should I feed my Gloom Cask

This is my gem set up:

1.) Pain Clasp - Rank 10
2.) Bloody Reach - Rank 10
3.) Starfire Shard (4/5 Star) - Rank 5
4.) Mother’s Lament - Rank 10
5.) Blood Soaked Jade (3/5 Star) - Rank 4
6.) Fervent Fang - Rank 6
7.) Blessing of the Worthy (4/5 Star) - Rank 2
8.) Power and Command - Rank 10

If Gloom Cask can outperform one of my current 2 star gems I would like to replace whichever with it.

Gloom Cask is only rank 4 right now, so DPS is very lacking. If it’s something worth holding onto in the future when I am able to add on more 5 star gems that work with my build I would like to keep it.

However, this is my 2nd time trying to use it and I’m just not sure about it. Not sure if it’s not my type or just too low of rank still.

On the fence about ranking up my Fervent Fang with it. However, again don’t mind holding onto Gloom Cask and just getting new gem power for Fang and then focusing on my current 5 star gems.