From Marduk's Throat

This ritual, the hallowed means by which the Assamites lowered their generation while under the influence of the Tremere curse, has largely fallen into disuse. A few cults of the clan still observe it out of humility or habit, and these kindred are among the schismatics and ur-Shulgi loyalists, respectively.

The vizier creates an alchemical substitute for vampiric blood, allowing the drinker of sufficient quantities to decrease her generation. The process converts mercury, molten gold, a range of plant and animal proteins, and other exotic ingredients into vitae.

Each ritual, which takes eight hours, produces one fourth of a blood point. To decrease their generation, an Assamite must consume a number of points of this alchemical blood equal to the maximum blood point value of a vampire of the desired generation. The consumer of the blood need not be the vizier who prepared the concoction. All of the blood for a given change in generation must be made by the same vizier, in the same laboratory. No more than one week may pass between one use of this ritual and the next for a single drop in generation, or all of the existing vitae-elixir spoils.

When the full amount of blood is at hand, the Assamite tries to assimilate the blood into her body. (This is not part of a ritual.) She makes an extended Stamina roll (Difficulty 9), seeking a number of successes equal to the blood points consumed. Failures don't stop the process, but they do deal 6 points of lethal damage apiece. Assimilation is so painful and distracting that any attacks made against her during this time face a difficulty of only 2.

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