Wave of Wrath

A pool of white and orange heat begins to puddle under your feet. The heat and vapors cause you to gently rise about a foot above it as you watch it form underneath you. When it forms you are floating on top of a wave of fury and flame measuring 60 feet wide, 20 feet high, and 5 foot thick. Any creature within 10 ft of the wave takes 3d8 dmg immediately unless they make a Dex saving throw. Then they will take half dmg. You sit atop boiling fury and can ride atop of it in tidal wave fashion in any direction according to your movement speed. Anything entering or passing through it must make the same saving throw or take 3d8 fire dmg. You sit atop of it until you next turn. Any creature starting its turn inside in it, must make another dex save or take 1d8 fire dmg. If you are hit while on top of the wave, you fall into it taking 2d8 fire dmg, then the wave disappears.