3e SRD:Improved Psicrystal
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Improved Psicrystal [Psionic]
Benefit: The character can implant another personality fragment in his or her psicrystal. The character gains the benefits listed for both psicrystal types. The psicrystals personality adjusts and becomes a blend between all implanted personality fragments.
Special: A character can gain this feat multiple times. Each time, he or she implants a new personality fragment in the psicrystal, from which the character derives the noted benefits.