Vampire

Shifting between the states of life and undeath, they're accomplished stabbers and casters.

Vampire is a species in Dungeon Crawl.

Vampires are a species whose abilities change depending on how much blood they have. At lower blood levels, they gain stealth and have less spell hunger at the cost of decreased regeneration. Vampires can survive indefinitely at a bloodless state, but they cannot heal in this form.

Additionally, at level 3, vampires gain the ability to turn into a bat, increasing dexterity and decreasing strength. It is a good means of escape, but they are unable to use items in this form.

At level 6 vampires gain the ability to bottle blood, allowing storage of portable satiation (similar to potions of porridge).

Good God picks for Vampires could include Makhleb and Kikubaaqudgha, as both grant access to regeneration without having to rely on corpses.