The Tome of Ultimate Evil
Absorb Strength Ritual
The participants must consume a living creature whose strength and con are greater than 24 naturally. The creature must have caused the participants damage equal to at least half their total hits points and must be alive and on full health when they start eating it.
If the participants capture the creature themselves they gain +10, they get +5 for each of the creatures spell like abilities, +1 per con bonus, +1 per strength bonus, if the creature is an outsider +10, if it is good +5,
The participants get a spell like ability similar to absorb strength, you gain ¼ its strength and con as a bonus for 1 round per character level for the cost of 1d6+1 points of wisdom damage.