You can cast spells that cover vast areas.

Prerequisites: Widen Spell.

Benefit(s): When you cast a spell augmented with Widen Spell, any numeric measurements of the spell's area increase by 200%. Only a burst, emanation, or spread-shaped spell can be affected by this feat.

Alternatively, you may expend a use of mythic power to cast a spell as a widened spell (gaining only the normal benefits of a widened spell, rather than the increased benefits outlined above) without preparing it as widened in advance, taking extra casting time, or increasing the level of spell slot it uses.

Normal: A widened spell increases its area by 100%.