Great Thunderclap

School: evocation
Circle: ancient 7th, bardic 7th
Spell Components: V, S
Action Time: 1 action
Range: medium
Shape: radius (medium)
Targeting: all (radius)
Base Duration: instant
Saving Throw: fortitude
Spell Resistance: no
Ritual Components: n/a

Causes a resounding, ear-splitting echo of thunder over the target area, stunning, deafening and throwing the affected prone for 3d3+1 rounds. If caster has greater spell focus: evocation, instead lingers for 3d3+1, +1/4 levels rounds.