Unless otherwise specified, mystic effects target a single object or creature. However, most effects can be made to target an area by spending extra points.
Converting a single-target effect to an area effect
A single-target effect can be converted into an area effect with 5-foot radius by doubling the effect’s primary sphere cost. For each five-foot extension to the radius, add half the initial primary sphere cost, rounded up. However, +10-foot radius is equal to the initial primary sphere cost, not double the rounded up cost. Individual targets within line-of-sight can be excluded from the effects by adding Div 1 per target. An entire class of targets (e.g., “my friends”) can be specified or excluded with Div 5.
The Efficient Burst feat improves a mystic’s ability to create area effects.