It would be great to make dark one's blessing a toggle; as it is, it will overwrite any other hit point boost you are using. I would particularly like to be able to use the armor of agathys, but as a fiend warlock, as soon as I kill someone I will lose my armor of agathys and gain the dark one 's blessing instead. At level 3 with 16 charisma, dark one's blessing gives 6 hit points, at level 4, 8. Meanwhile armor of agathys gives you 10 plus 10 cold damage to anyone in melee distance from level 3. It sucks because I feel like I need to start over and not take the fiend so I can use this spell, a toggle would fix that.
