Wall of Fire
From HGWiki
Caster Level: Druid 5; Sorcerer/Wizard 4; Cleric with fire domain 4
Innate Level: 4
School: Evocation
Descriptor(s): Fire (barrier)
Component(s): Verbal, Somatic
Range: Medium (20 metres)
Save: Reflex 1/2 (only for fire wall)
Spell Resistance: Yes (only for fire wall)
Area of Effect/Target: Wall 30 ft long
Duration: 1 Round / 2 levels
Description: This spell creates a curtain of fire that deals 4d6 points of Fire damage to any creature that attempts to pass through it. At CL20, creates a wall of stone instead of a wall of fire.
Notes
The Wall of Stone version of the spell can be broken by physical damage or loot breaking spells