The effect of most spells is temporary. Spells that create, summon, or reshape matter and energy only continue if the Spellcaster maintains the spell. The same is true for spells used to perform Assist, Aid, Obstruct, or Complicate Actions. Once the Spellcaster releases the spell, the world goes back to its original state. The effects of spells that move or heal, and the work done with a spell that emulates a skill are permanent. In addition, changes to targets and the environment, like the damage from a fireball, remain after the spell ends.