It is usually the little things that can really help define character. The small class options are nice but even allowing some of them to be done in different ways can aid in this. In this PDF that is what they do with psi crystals. It is just a few more options to make them different so ever psion does not seem to have the exact same thing.
High Psionics: Psi Crystals Expanded is one of the great PDF s on psionics Dreamscarred Press has come out with. These guys really know their psionics and their PDfs are quickly becoming the best support for psionic based characters and rules anywhere. This fourteen page PDF comes in an on screen and print version. It has a very nice lay out and it is well book marked. The book has very little art just the cover and a sigil like piece at the very end.
There are a few new and interesting version of the psi crystal. The first one is called the Awakened Psicrystal. It is a bit smarter then the normal ones and has the ability to use a few minor psionic powers itself. There is a list of options on which powers the psi crystal has access to. It is a more powerful option but it also requires the psionic character to take two feats to grant the ability to his psi crystal.. Even then it might be a little too good as there are some good psionic powers a psi crystal would have access to. It is though a very interesting ability and could really make for some fun NPCs with this type of psi crystal.
The implanted Psi crystal is pretty self explanatory. It also requires a feat to do and a bit of experience from the psion. Once implanted it is very much out of harm?s way. It gives the psion and nice initiative bonus and the alertness feat but it of course stuck in the psions body. This option can be combined with others presented in the book.
The Cognizance Psi Crystal also requires a feat and a bit of experience points. But it has the cool abilities of being able to store some of the psions power points and can even be used to refill the psions power points at a later date.
My favorite of the options is the Psicrysmal. It is a psi crystal infused with a bit of earth elemental to become a crystal spider or scorpion. It gets some nice abilities as the psion levels and while it may not have been intended it can make for some cool visuals for NPCs especially ones that are Drow who love the spiders (and scorpions for those using the Eberron setting).
The last psi crystal option might turn out to be the most popular. It is the psi crystal weapon and allows a psion to use their own psionic abilities in conjunction with the weapon. It also requires a feat to use but looks to be well worth it.
The book has new feats in it that are mostly the ones one needs to use these new and cool psi crystal forms. There is also a pair of new psionic monsters both related to psi crystals. This is a very well done book with great rules a great creativity.
LIKED: Very well done with good rules and creativity.