Shroud of Flame

You encircle yourself in an aura of protective flames. Each creature that hits you with an unarmed attack, Grapples you, or otherwise touches you takes 3[fire] damage. When you Cast the Spell and the first time you sustain it each round, each creature in the area takes 3d6[fire] damage (basic Reflex save). Heightened (+1) The damage caused by touching you increases by 1, and the fire damage when you Cast the Spell or sustain it increases by 1d6.