You have undergone many life-or-death situations with your companion, and have become adept at saving their life. A permanent warding bond has formed between you.

Choose an ally. This ally will permanently benefit from the effects of Warding Bond as if you had casted it. You cannot dismiss the spell, and it no longer has a Material component, but it has no effect if you are separated by more than 60 feet. You will take failed death saves from your companion taking damage!

You can sense each other's locations, and a sliver of each other's emotions.

As the Warder, you can choose to forego your turn, in exchange for an extra reaction to use before your next turn.

n.b. our party chose to play without the Resistance aspect of Warding Bond. Balance this as you will.