Initiation Time: 1 action
Range: 90 feet
Duration: Concentration, up to 1 minute
A small bead of flame flashes from your hand and condenses into a burning ember at a chosen point within range for the duration. When the form ends, either because your concentration is broken or because you decide to end it, the ember bursts into an explosion of flame that spreads around corners. Each creature in a 20-foot-radius sphere centered on that point must make a Dexterity saving throw. A creature takes fire damage equal to the accumulated damage on a failed save, or half as much damage on a successful one.
The form's base damage is 10d6. If at the end of your turn has not yet detonated, the damage increases by 1d6.
If the ember is touched before the interval has expired, the creature touching it must make a Dexterity saving throw. On a failed save, the form ends immediately, causing the ember to erupt.
The fire damages objects in the area and ignites flammable objects that aren't being worn or carried.
At Higher Levels. When you initiate this form at a higher level, the damage increases by 1d6 for every level above 5th.