Spell Factory

• Summary
  • The Spell Factory allows the player to create spells using Elixir. There are currently 5 permanently in-the-game spells: the Lightning Spell, Healing Spell, Rage Spell, Jump Spell and the Freeze Spell. There was one limited edition holiday-themed spell called the Santa's Surprise that was released around Christmas 2012.
  • The Spell Factory takes up a 3x3 space.
  • The spells themselves can be used in battle by selecting a previously created spell and clicking on the enemy's village. The spell can be placed anywhere, bypassing walls or buildings, and it cannot be destroyed by any defenses.
  • Although multiple instances of a single spell may be created (up to the maximum 5 a maxed Spell Factory can hold), each spell instance can only be used once. Once you have used a spell, you must create it again in order to use it in your next battle.
  • You will not lose your spells if your Spell Factory is destroyed during the defense of your village, nor will its destruction disrupt or pause spell creation in any way.
  • If you upgrade the Spell Factory while it is creating a spell, the spell continues building during the upgrade, and will be available as soon as the upgrade completes. It is not possible to start building new spells during the upgrade. If you have any spells already created when you start the upgrade, you will be able to use these in a raid.
  • You can speed up the creation of spells with gems and there is also an ability to boost spell production for 1 hour. The boost option costs 5 Gems and will increase the speed of the boosted Spell Factory by a factor of four.
  • Note: The boost timer will continue to count down even if you aren't creating spells, so don't boost your Spell Factory until you are ready to use it.
  • When you click to boost the Spell Factory a clock appears for a few seconds. 
  
  
  Dark Spell Factory 
  
  
  
  • Summary
  • The Dark Spell Factory allows the player to create Dark Spells using Dark Elixir. There are currently three Dark Spells: the Poison Spell, Earthquake Spell, and Haste Spell.
  • It was released on the update that came at July 1, 2015.
  • All existing Dark Spells take up one housing space in the spell storage, whereas Elixir spells take two spaces. The total spell storage capacity is shared between the Spell Factory and the Dark Spell Factory. The Dark Spell Factory adds one spell storage capacity to the total spell storage capacity.
  • After the December 2015 update, players can donate one dark spell to clanmates, provided that the clanmates have Clan Castle level 4 or above.
  • The Dark Spell Factory is unlocked at Town Hall 8.