No Strain (3.5e Variant Rule)
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Finally, you may choose to ignore strain altogether. In this case, psychic skills are as easy to use as ordinary skills. This means that psychics can use their abilities as often as they wish. This is best suited to a campaign where all the characters are psychics (or at least have access to psychic skills) and psychics are not intended to balance against spellcasters, psions, or even other class abilities. In this case, metapsychic feats should be applied solely to individual skills rather than applying them on a per-use basis (since there can be no increase in strain for using a metapsychic feat). Either that or require the skill’s normal strain cost for applying a metapsychic feat (meaning that metapsychic-enhanced skills cost strain while normal psychic skill use doesn’t).