Concussive Barrier (3.5e Spell)
From D&D Wiki
|Level:||Barrier Mage 1, Sorcerer/Wizard 2, Warmage 1|
|Components:||V, S, M|
|Casting time:||1 standard action|
|Range:||Medium (100 ft. + 10 ft./level)|
|Area:||A 15 ft. spiral/level|
|Duration:||As determined by spiral (see above)|
|Saving Throw:||None (See below)|
At the time this spell is cast, you create a spiral of invisible walls. When any creature attempts to cross one of these walls, they are immediately hurled directly backwards 1d4 x 5 ft. and suffer 1d4 hit points of damage for every 5 ft. of distance they are thrown back. A Reflex save is required for those thrown back to land on their feet, otherwise they fall prone and drop anything they are holding.
Material Component: A silver mirror (10 gp).