Slayer form is a huge part of Bhaalspawn saga, when I got it for the first time, I got so hyped in BG2

[Linked Image from i.imgur.com]

And the graphics of the graphics are much gorgeous :

[Linked Image from i.imgur.com]

So, the Dark Urge which gives all in gets such amazing transformation.

The Dark Urge which resists its killer instinct loses such amazing transformatio and ... Gets nothing.

Would be cool IF a Dark Urge which resists its urge gets a SLA(Spell Like Ability), for example, casters get a SLA allowing him to cast once per long rest Finger of Death. I know that this spell in 5E is extremely weaker than in 2E. Martial Dark Urges can get the ability to imbue its melee attacks with necrotic damage.