This has been requested on multiple occasions so I went ahead and went into more detail with the Shapeshifting Forms. I was going to save detail for the next book, but nah, here you go.
Primordial Cat
Level: 1
Cost: 100,000 Mana Per Second
HP: NA (See Magma Manipulation.)
Strength: +5,000
Dexterity: +5,000
Special Abilities: Body of Magma, Magma, Manipulation, Magma Regeneration.
Body of Magma: You body is transformed to one that consists entirely of magma.
Magma Manipulation: Because your being exists within a magma state, you have full control over the magma itself. Harden or soften your body at will.
Magma Regeneration: If magma is displaced from your body, you are able to return to your Primordial Cat form indefinitely, unless 75% of your magma is lost.
Unlawfully taken from Royal Road, this story should be reported if seen on Amazon.
Note: You do not take damage to your HP. Any attack that removes or separates magma from your body leaves you weaker.
Next Level:
Cost: 99,100 Mana Per Second
+50 Strength
+1% Strength
+50 Dexterity
+1% Dexterity
Werewolf Form
Level: 1
Cost: 3,500 Mana Per Minute
Strength: +500
Dexterity: +500
Constitution: +500
Intelligence: -50%
Wisdom: -50%
Special Abilities: Bloodlust, Regeneration.
Bloodlust: When faced with battle, the lust for blood has a clouding effect on the mind, making it difficult to think of anything other than your prey.
Regeneration: Your HP Regeneration is three times higher than your natural state.
Next Level:
Cost: 3,470 Mana Per Minute
+5 Strength
+5 Dexterity
+5 Constitution
Intelligence: -49%
Wisdom: -49%
Hellhound Form
Level: 1
Cost: 10,000 Mana Per Minute
Dexterity: 1,000
Special Abilities: Flame Breath, Fire Aura, Turn Up the Heat.
Flame Breath: +1,000 Fire Damage/2,000 MP
Fire Aura: Passive. +5 Fire Damage/Per Minute.
Turn Up the Heat: For every 100 Mana Per Minute an additional +5 Fire Damage/Per Minute is given. Maximum damage, 500.
Next Level:
Cost: 9,900 Mana Per Minute
Flame Breath: +1,000 Fire Damage/1,985 MP
+40 Dexterity
Many of the other forms he has stolen the essence for he is unable to use because he can't use Dark Magic. These are the main one he currently can.