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+# Spell Casting
+Spells are any active ability listed as a spell and are under these design principles.
+
+_Bolded values are subject to change._
+
+### Gaining spells
+Spells are gained much like any other active ability upon leveling up. They may also be tied to a specific class.
+
+## Spell Design principles
+A list of principles that must be followed when designing a new spell.
+1. Spells should always put an entity on the playing field when possible. Such as instead of a teleportation spell, instead it's a spell that places 2 linked portals.
+2. Spells should feel impactful.
+3. A spells cast time should at minimum be 4 seconds on the base spell unmodified.
+4. An exception to principle 3, If a spell were to have a base cast time faster than 4 seconds the cool down must be vastly longer.
+
+## Accumulated damage threshold (ADT)
+ADT is used in place of a do-after canceling upon taking any damage. What ADT does is it while your casting a spell it tracks how much damage that you have taken. 
+Once you reach a certain threshold your spell is canceled. This can also be used for any ability
+
+# Mana
+Mana, at its most basic, is a resource spent on casting spells and other effects.
+Mana is stored in a singular way for now -- in the body of players. Players will have internal mana storage that they can cast from.
+A player's mana capacity is determined by their intelligence stat, at 4 mana capacity per intelligence. Players start with 5 intelligence, giving them a starting capacity of 20.
+Mana is gained in a couple ways, much like games such as Terraria, Doom, and Ultrakill, to incentivize aggressive play.
+1. Mana will not natrually regenerate over time, as this causes boring gameplay of hiding away for 15 minutes.
+2. "Mana motes" are dropped by monsters when killed in order to incentivize aggressive play. Mana motes can be consumed in-hand to instantly restock mana. Higher tier monsters drop higher tier mana motes, which contain more mana.
+3. The mana earned from mana motes is limited, so magic characters must still be cautious when using their abilities.
+4. Mana motes expire after 10 minutes, so that they are not built up for spam casting.
+5. Finally, mana potions are purchased in safe zones or found in the dungeons. They are a more permanent form of mana, able to be used at any time. They restore high amounts of mana
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