Mana stones and its uses (WIP)

[Arin]

Mana Stones and their Uses

Mana can be naturally drown from the environment when casting spells, but that source is finite until it can be replenished. Unless someone is willing to tap into black magic, what then? The challenge of finding other ways to cast spells has led many sorcerers to research many alternatives, with very little results. However, during the time when the 5 kingdoms still flourished, mining escapades have led the earth kingdom to come across a rare glowing gem, capable of storing mana so securely that it can only be drained through physical contact. These stones were able to naturally draw in and store substantial levels of mana enough to cast one or more spells depending on their size. Due to its special properties, the people of Terra Mystica have declared this mineral as a "mana stone" 

Mana Jewlery and relics: When first unearthed, these stones were very unrefined and rough to the touch but after some gem cutting and refining, mana stones look no different than the average gemstone. Due to the quality of the stone-carving and the beauty of the gem itself after being cleaned and polished, many have begun to integrate these stones into everyday jewelry and articles of clothing or armor, providing the grace and beauty of jewelry while still maintaining the efficiency of casting spells. It is not uncommon to see seasoned spellcasters wearing multiple articles of mana stone accessories, giving them an edge for when a battlefield has run out of mana in that area.

Storage capacity and stone size: Depending on the size of a single mana stone, its storage capacity for excess mana in the environment can vary to different amounts. Here is a chart showing how much mana is stored in each stone size for usable spells, this value is listed as sP. 

Special Note: if there is any damage to the stone, such as cracks within the stone, this will diminish the stone's full storage capacity by a quarter of its maximum capacity (Ex: a large mana stone with a cracks within the stone will only be able to produce 21sP instead of the standard 28sP, reducing the amount of master level spells that can potentially be cast from this mana source).

SPOILER: Click to show

Equations for calculating each stone category's mana total: This is essentially the math rules used to determine the amount of mana that each stone category can hold. The equations will have special values for previous size (P), current size (C) and next size (N). To better understand these equations, refer to the stone size chart for numbers to fill each portion of the equations.

Mana storage increase for sizes (small-oversize): C*2=N
Mana storage increase for sizes (huge-titan): (C*2)+P=N
Mana storage reduction for any cracked stones: C*0.75