Ghoul acquiring abilities

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So, the h2p states if a ghoul eats a killing role, they get a night kill, and if they eat a WC role, they get a role check.
What if the role falls under both? Like certain Coven roles (Witch, Warlock, Furie, etc). Which ability do they get?
EDIT: Follow up, what happens if a ghoul consumes a Revenant Corpse, or the VD zombie?
EDIT2: Considering items sometimes work in the graveyard, does the Veil of Shadows change anything?
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What powers do ghouls have?
GhoulsGhoulPowers and AbilitiesShapeshiftingVulnerabilitiesBrain trauma DecapitationAppearanceHuman; can appear as any person they have fed on, living or dead.Episode(s)4.19 Jump the Shark 6.10 Caged Heat 13.06 Tombstone1 more rowHow do I become a ghoul?
In some accounts, the person rises as a ghoul after death. In others, he or she becomes a ghoul after dining on human flesh -- a cultural taboo often linked to monstrous transformations. In either case, the transformation is permanent and linked directly to the state of the soul or psyche.Do ghouls need to sleep VTM?
Many ghouls suffer sleep deprivation due to the fact they are expected to do daytime chores as well as help with their masters at night. 48. Most Kindred furniture of the discriminating haven is black leather. Plastics and naugahyde are also common.How do ghouls get stronger?
The more the ghoul will eat, the greater their power gets. However, that's not all, as many ghouls eat the flesh of their own kind and because of that their Kagune transforms into Kakujas, which strengthens them even further.Ghoul Race Showcase / Guide - BLOX FRUITS UPDATE 12 (Very Detailed)
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