To manifest a
power, you must concentrate. If something threatens to interrupt your
concentration while you're manifesting a
power, you must succeed on a
Concentration check or lose the
power points without manifesting the power. The more distracting the interruption and the higher the level of the power that you are trying to manifest, the higher the DC. (Higher-level powers require more
mental effort.)
Injury: Getting hurt or being affected by hostile
psionics while trying to manifest a
power can break your
concentration and ruin a
power. If you take
damage while trying to manifest a
power, you must make a
Concentration check (DC 10 + points of
damage taken + the level of the
power you're manifesting). The interrupting event strikes during manifestation if it occurs between when you start and when you complete manifesting a
power (for a
power with a
manifesting time of 1 round or longer) or if it comes in response to your manifesting the
power (such as an
attack of opportunity provoked by the manifesting of the
power or a contingent attack from a readied action).
If you are taking continuous
damage half the
damage is considered to take place while you are manifesting a
power. You must make a
Concentration check (DC 10 + 1/2 the
damage that the continuous source last dealt + the level of the
power you're manifesting).
Vigorous Motion: If you are riding on a moving
mount, taking a bouncy
ride in a wagon, on a small boat in rough water, belowdecks in a storm-tossed ship, or simply being jostled in a similar fashion, you must make a
Concentration check (DC 10 + the level of the
power you're manifesting) or lose the
power.
Violent Motion: If you are on a galloping horse, taking a very rough
ride in a wagon, on a small boat in rapids or in a storm, on deck in a storm-tossed ship, or being tossed roughly about in a similar fashion, you must make a
Concentration check (DC 15 + the level of the
power you're manifesting) or lose the
power.
Violent Weather: If you are in a high wind carrying blinding rain or sleet, the DC is 5 + the level of the
power you're manifesting. If you are in wind-driven hail, dust, or debris, the DC is 10 + the level of the
power you're manifesting. In either case, you lose the
power if you fail the
Concentration check. If the
weather is caused by a
power, use the rules in the
Power subsection above.
Manifesting Powers on the Defensive: If you want to manifest a
power without provoking
attacks of opportunity, you need to
dodge and weave. You must make a
Concentration check (DC 15 + the level of the
power you're manifesting) to succeed. You lose the
power points without successful manifestation if you fail.
Entangled: If you want to manifest a
power while
entangled in a net or while affected by a
power with similar effects you must make a DC 15
Concentration check to manifest the
power. You lose the
power if you fail.