5 star cautery sword?

Many of you know of the various brandish lines, but no one would ever create a cautery sword.
The cautery sword is a 3 star normal damage brandish with a damage bonus vs slime high.
With this boost it would seem a good weapon for the Sovereign Slime mission. It's damage is comparable to the nightblade, but with it being the end of it's short alchemy path the nightblade outclasses it.
The only reason to choose this weapon over the nightblade is that it lacks the penalty to the silkwings that live in the Sovereign Slime mission.
Instead of cutting this sword's line short why not give it a path that ends in a normal damage brandish with a damage bonus vs slime Very high as well as a chance to inflict moderate stun. This would make it a viable choice for many missions as well as providing a new weapon.

The 5star Acheron outclasses the 3star Cautery sword. Of course it does. Its 5star vs 3star.
The point I'm trying to get across is that a 5star version of the Cautery sword would be superior to the Acheron when it comes to eliminating the Silkwings that plague the knight that brings only shadow weapons to a Jelly King run.

With a acheron, u don't need nothing against silkwings. U oneshot basically everything and u take all the time in thwle world on those. Plus. Have u ever pressed p and see the 2 weapon slots???

Make the cautery sword weaker but give it the ability to heal teammates to a certain percent of their total health.After all, a knight with 10% health obviously should have many dangerous injuries that can be healed with cauterizing.
there were a suggestions to put heart attack in the charge. that would be nice. but we do not need normal brandish. acheron outclasses evrything