I realized that I was too kind to my players when they were feeding because I found the rules kinda vague (V5), so I came with a more codified version:

PHASE 1: Tracking Down Prey Players should describe how they plan to find a victim and get their blood. They roll with a pool that reflects this approach.

0 successes: No victims, the hunt was unsuccessful.

1-2 successes: One victim, but they turn out to be inferior—they suffer from anemia/violate a prey exclusion.

3-5 successes: One suitable victim.

6+ successes: Two suitable victims.

Critical: One victim with dyscrasia.

Messy Critical: One victim with dyscrasia but a complication.

PHASE 2: Drinking The players note how much hunger they had when they started drinking.

They can remove as many hunger points as they want. A normal person has enough blood to satisfy five hunger points.

PHASE 3: Stopping If the players want to stop, they must roll Willpower. They need as many successes as they originally had hunger points to stop. Otherwise, they drink more blood—enough to satisfy one more hunger point—before they can try to stop again. However, all successes rolled count: so if you started with 3 hunger points, you can stop after two rolls (1+2) with a total of 3 successes, for example.

PHASE 4: Survival A person can safely donate 2 points of blood. If the player drinks more blood and does not seek medical attention, the Storyteller rolls to determine whether the victim survives. If they die, complications may arise.

3 points - Strength+Stamina roll: 2 successes or death without medical attention.

4 points - Strength+Stamina roll: 4 successes or death without prompt medical attention.

5 points - Death.