Wall of Thorns

Creation
Circle: Tactician 4
Casting Time: 1 standard action
Range: [Close]
Effect: Wall of thorny brush, 10 ft thick and tall and up to 10 ft wide per level
Duration: [Encounter]
Saving Throw: None

You create a line 10 ft long per level you possess and 10 ft wide originating from target square within range that lasts until the end of the [Encounter] and blocks line of sight. For each creature, the first time each [Round] that creature enters or exits a square in the line, wall of thorns deals physical damage to that creature equal to three times your character level. As a standard action, a creature may remove one square within its [Melee] range from the area of this spell's effect.