Metapsionic feats modify psionic skills in various ways, usually expanding their capabilities at the cost of greater strain. Most metapsionic feats can be applied to various psionic skills on a case-by-case basis; that is, the player can decide what metapsionic feats (if any) to apply to a particular skill use and can apply some, all, or none of the metapsionic feats available to him at any given time. Unless the feat’s description says otherwise, applying a metapsionic feat to a skill does not increase the time required to use that skill.

Metapsionic feats typically double the strain cost of the psionic skill they affect. If multiple metapsionic feats are applied to the same skill use, their strain values do not stack. Instead, each additional doubling of the skill’s strain increases the multiple by one. So, it is ×2 (double) strain for one metapsionic feat, ×3 strain for two, ×4 strain for three, and so forth.

If a metapsionic feat increases strain by a set amount rather than a multiplier, the strain increase is added after the multiplier for other metapsionic feats is applied.