Varill's Flaming Eagle

 You create a large flaming bird that charges at the target. On hit the bird explodes in a blaze of fire dealing 5d8 fire damage. All other creatures in five feet of the target must make a dex saving throw. On a failure they take 3d8 fire damage from the explosion, half on a success.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the damage increases by 1d8 for each slot level above 5th.