The Arcane Alchemist of DxD

Potion/Enchanting Rankings

S-Tier: Highest 

A-Tier

B-Tier 

C-Tier 

D-Tier 

F-Tier 

E-Tier: Lowest 

Power Rankings

Low Class - The lowest class. Humans usually reside in this ranking. 

Middle Class - Low class devils, Angels, Fallen, Magicians, and etc. 

High Class - Middle class devils, angels and fallen. 

Zeta Class - High class devils. 

Beta Class - Ultimate class devils, four sets of wings: 

Alpha Class - Five sets of wings devils 

Omega Class - Six sets of wings, Satan class. God class. 

Zen Class - Super devils, Chief Gods 

Peak Class - Great Red/Ophis/Trihexa 

Note, this is the world standard ranking accepted by the world of the supernatural, but each faction has their own internal power ranking.

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Main Potions and Their Rankings:

[Healing] 

E-Rank: Scratches 

F-Rank: Minor wounds

D-Rank: Cracked bones

C-Rank: Broken bones 

B-Rank: Almost fallen off limb 

A-Rank: Missing body parts 

S-Rank: Yes 

[Stamina] 

E-Rank: 5% 

F-Rank: 10% 

D-Rank: 25% 

C-Rank: 40% 

B-Rank: 50% 

A-Rank: 75% 

S-Rank: 100% 

[Vitality] 

E-Rank: 1 Year 

F-Rank: 5 Years 

D-Rank: 20 Years 

C-Rank: 100 Years 

B-Rank: 500 Years 

A-Rank: 5000 Years 

S-Rank: 15,000 Years 

[Strength] 

E-Rank: Middle Class 

F-Rank: High Class 

D-Rank: Zeta Class 

C-Rank: Beta Class 

B-Rank: Alpha Class 

A-Rank: Omega Class 

S-Rank: Zen-Class 

[Agility] 

E-Rank: Middle class 

F-Rank: High Class 

D-Rank: Zeta Class 

C-Rank: Beta Class 

B-Rank Alpha Class 

A-Rank: Omega Class 

S-Rank: Zen-Class

[Mana] 

E-Rank: Low Class 

F-Rank: Middle Class 

D-Rank: High Class 

C-Rank: Zeta Class 

B-Rank: Beta Class 

A-Rank: Alpha Class 

S-Rank: Omega Class

[Fertility] 

E-Rank: 5% Increase 

F-Rank: 10% Increase 

D-Rank: 25% Increase 

C-Rank: 40% Increase 

B-Rank: 65% Increase 

A-Rank: 80% Increase 

S-Rank: Insured Fertility 

[Aphrodisiac] 

E-Rank: Slight lust 

F-Rank: Clouded mind lust 

D-Rank: Strong desire 

C-Rank: Horny 

B-Rank: Succubus/Incubus charm 

A-Rank: Lustful so bad will do anything to fuck you 

S-Rank: Wtf bro 

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Enchanting

Enchanting works by applying an effect onto an item or person. It is similar to runes, but doesn't require runic writing. However it is easier to remove enchantments than runes in most cases. 

A sword can have an enchantment of [Durability] and [Sharpness] attached to it. The sword would be much harder to damage, and it's sharper then it should be and retains its edge based on the type of sharpness enchantment placed. 

Similarly one can apply a series of enchantments that mirror the effects of runes. [Timer], [Charge] and [Explosion] enchantments on a rock or item for it to explode after a certain amount of time charging by absorbing ambient mana. 

However in the same situation, applying enchantments onto people is harder since their sense of self, the soul, will degrade the enchantments on them. So it's better to apply enchantments onto items for best effects. However short term use is also possible.