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Blood Potency

The Blood thickens with age. A Fledgling's Vitae is thin and watery compared to the concentrated ichor running through an Elder's veins; more potent blood grants access to stronger Disciplines, more powerful Surges, and greater resilience, but it also deepens the curse. Your Bane bites harder, your Compulsions grow more demanding, and your feeding requirements become increasingly restrictive. Blood Potency is the double-edged sword at the center of vampiric existence: the stronger you become, the more the Beast owns you.

Blood Potency is rated on a scale of 0–5. It can be increased by 1 by spending 10 XP and entering voluntary slumber at 0 Hunger; the transformation takes a full day of uninterrupted rest as the Blood reshapes itself. Your starting Blood Potency is determined by your Age Bracket, and BP 0 characters (Thin-Bloods & Ghouls) cannot increase it through normal advancement — Diablerie is the sole exception for Thin-Bloods, and the Embrace is the only way up for Ghouls.

Age Scaling

Blood Potency is tied directly to how long you've been undead (or in the Devorari's case, how long you've been slurping down ephemera like noodles). Younger vampires start weaker but grow quickly; older ones start powerful but plateau hard. The starting values are:

  • Thin-Blood/Ghoul: BP 0
  • Fledgling: BP 1
  • Neonate: BP 2
  • Ancilla: BP 3
  • Elder: BP 4

BP 5 is not a starting value for any Age Bracket. Reaching it requires either spending 10 XP at BP 4 or successfully committing Diablerie against a sufficiently potent victim; either way, it represents the upper boundary of what a player character can achieve. Anything beyond BP 5 is the domain of ancient terrors and Storyteller-controlled nightmares. Seek it not. Focus your ambitions elsewhere lest the Beast take ye.

Mechanical Effects

Blood Potency affects nearly every system in the game. Some of these effects are detailed in their own sections elsewhere; this is the central reference for what your BP level means.

Harm Capacity

Your Harm Track starts at 6 HP at BP 0–1. For every BP level past 1, you gain +3 HP (9 at BP 2, 12 at BP 3, 15 at BP 4, 18 at BP 5). Additional HP may be gained through the Fortitude Discipline. See Harm & Healing for full details on tracking and recovery. Look at you, so sturdy and strong!

Bane Severity

Every Clan Bane imposes penalties that scale with your Blood Potency. At BP 1, these are minor inconveniences. At BP 4–5, they become defining limitations that shape how you navigate every night. The specific penalties are described in each Clan's Playbook, but the principle is universal: the more potent your Blood, the heavier your curse weighs. Many Banes impose an Ongoing penalty "equal to your Blood Potency (minimum 1)" under their specified conditions.

This scaling also applies to some Variant Banes and the Devorari's Wasting Clock Bane, which advances BP + 1 segments per subsequent Feed upon the same mortal.

Compulsion Intensity

Like Bane Severity, an Ongoing penalty imposed by your Clan Compulsion scales with your Blood Potency. At BP 1, most triggered Compulsions are a -1 annoyance you can push through. At BP 4–5, it's a -4 or -5 penalty that makes anything other than satisfying the urge nearly impossible. Full Compulsion rules and Clan-specific triggers are in each Playbook.

Blood Surges

At any time, any vampire can activate a Blood Surge to gain Advantage on a number of rolls equal to their Blood Potency. Make a Hunger Check when activating, gaining +1 Hunger on a failure. Unused Advantages expire at the end of a scene or when you sleep, whichever comes first.

You cannot activate a Blood Surge while a previous activation is still active (e.g., if a scene continues across multiple sessions). The Advantage this grants, as usual, stacks with Forward/Ongoing bonuses and cancels out any Disadvantage you might have.

You can activate Blood Surge a number of times per night equal to your Blood Potency. If your BP is 3, you can Blood Surge 3 times for a total of 9 instances of Advantage on rolls. Simple!

Discipline Access

Your Blood Potency determines the maximum level of Discipline Power you can learn and use. A BP 1 Fledgling can only access level 1 Powers, while a BP 4 Elder can access Powers up to level 4. Reaching BP 5 unlocks the full Discipline tree. Powers already learned remain available even if your BP temporarily drops (through Torpor or other effects), but you cannot activate them until your BP meets the requirement again.

Feeding Restrictions

As your Blood thickens, it becomes pickier about what sustains it. Weak or stale sources that satisfied you as a Fledgling eventually stop working entirely, forcing you toward fresher and more dangerous prey.

  • BP 0–1: No feeding restrictions. Animals, blood bags, and mortals all work as described in the Feed Move.
  • BP 2: Animal blood and blood bags are less satisfying. When you Feed from these sources, reduce Hunger by 1 less than you normally would (minimum 0). The Bagger Predator Type lets you ignore this restriction.
  • BP 3: Animal blood provides no sustenance whatsoever. You must Feed from humans. The Farmer Predator Type cannot be selected at this level or above.
  • BP 4: Blood bags become light snacks. You can only reduce Hunger below 2 by draining a mortal to the point of death or beyond. Normal Feeding works for 5 → 2 Hunger, but getting below 2 requires near-total or total exsanguination. This will likely kill your vessel.
  • BP 5: You can only reduce Hunger below 3 by draining a mortal completely. Reaching 0 Hunger always means someone died.

These restrictions apply to the Hunt, Feed, and Sate Your Hunger Moves. When the restriction says a source "provides no sustenance," treat any Hunger reduction from that source as 0 regardless of the roll result; you still get other benefits or complications from the Move, just no Hunger relief. Yes, your beastly tummy may well rumble.

Advancement Rate

Younger vampires learn and adapt faster than older ones. Your Blood Potency affects how quickly you accumulate experience from sources that aren't tied to your Clan Experience triggers. As a general principle: the higher your BP, the slower meaningful growth comes. The Blood has less room to change when it's already thick and gunky with centuries of accumulated power.

Older, more potent vampires have seen it all before. What would be a transformative experience for a Fledgling is just another Tuesday night for an Elder. This penalty applies to Slumber Reflections and Storyteller Awards only, never to Clan Experience triggers.

  • BP 0–2: No penalty.
  • BP 3: -1 XP from affected sources (minimum 0 per source).
  • BP 4–5: -2 XP from affected sources (minimum 0 per source).

This means a BP 4 Elder who would receive +2 from Slumber Reflections and +2 from a Storyteller Award gets 0 + 0 = nothing from those sources that night. Their Clan triggers still work normally. See the Advancement section for more details.

Torpor

When a vampire enters Torpor — whether from catastrophic Harm, voluntary slumber, or the weight of centuries — time passes differently. The Blood cools, thins, and very gradually loses potency. A vampire in Torpor loses 1 Blood Potency for every 20 years of uninterrupted rest, to a minimum of 1 (or 0 for Thin-Bloods). Waking from extended Torpor means returning weaker, disoriented, and desperately hungry; the world will have moved on without you.

Voluntary Torpor is rare among street-level vampires but not unheard of. An Ancilla who wants to disappear for a decade might choose to sleep it off rather than face whatever's hunting them. If a player character enters long-term Torpor, they are effectively retired until the fiction brings them back, and they may not be the same vampire when (if) they wake once more.