Written in FireInvoker Attack 7
Fiery letters flicker in the air and sear nearby enemies.
Encounter ✦ Conjuration, Divine, Fire, Implement
Standard Action Ranged 10
Effect: You conjure fiery symbols in 1 square within range. The symbols last until the end of your next turn. Any enemy that starts its turn within 5 squares of the symbols and does not end its turn at least 6 squares away from them takes fire damage equal to 10 + your Wisdom modifier.
Published in Divine Power, page(s) 61.