Magic:Tensers Transformation

Transmutation
Level: Sor/Wiz 6
Innate Level: 6
Component(s): V, S
Casting Time: 1 action
Range: Personal
Target: Caster
Duration: 1 round/level
Counter(s): --
Saving Throw: None
Spell Resistance: No
Metamagic: Extend, Quicken, Silent, Still
Energy Substitution: No

The caster becomes an engine of destruction, gaining a +1 attack bonus for every 2 caster levels, a +4 natural armor AC bonus, +2d4 Strength, +2d4 Dexterity, +5 to their Fortitude saving throws, and +1d6 additional hit points per caster level. The caster also gains the feats Weapon Proficiency: Simple and Weapon Proficiency: Martial. In this state, however, the caster can't cast spells.

Alternatively, Transmutant Mages of at least Rank 2 that cast this spell can use Nightstalker's Transformation, granting 3d6 sneak attacks, +10 to hide/move silently, and evasion. The caster loses the ability to cast spells while the spell effect is active.