Some spells, like Create Bonfire or Entagle, will require the caster to cast the spell onto the ground. However, as dragons, we may often find ourselves flying to high ofd the ground to cast the spell. Fortunally, those same spells that are required to be cast onto the ground can have the Aerial Casting option which allows the spell to be cast high in the sky.
Whenever you Aerial Cast a spell, the effects of the spell will change slightly. For instance, when Maple cast Create Bonfire regulary, she creates a bonfire that does 1d8 fire damage. But when Maple Aerial Cast Create Bonefire, she creates a fireball in the air that does 2d4 fire damage.