Druid 8/ monk 4/ shifter 28

Getting started
Race: elf

Starting abilities:
 * Strength = 13 (prerequisite for great cleave)
 * Dexterity = 15 (prerequisite for circle kick)
 * Constitution = 6
 * Wisdom = 18 (32 at level 40)
 * Intelligence = 12
 * Charisma = 8

Physical abilities will be overriden when shifted, so don't worry about low constitution. Alignment: lawful neutral

Level progression

 * Level 1 = druid
 * Level 2 = monk
 * Level 3 = druid
 * Level 4 = monk
 * Level 5 = druid
 * Level 6 = monk
 * Level 7 = druid
 * Level 8 = monk
 * Level 9 = druid
 * Levels 10 - 17 = shifter
 * Levels 18 - 20 = druid
 * Levels 21 - 40 = shifter

Classes are multiples of 4, so thou willst not suffer BAB penalty. This progression would also minimize multiclass penalty on low levels.

Feats

 * 1 - alertness (prerequisite for shifter)
 * 3 - weapon focus (unarmed strike)
 * 6 - circle kick
 * 9 - power attack
 * 12 - great cleave
 * 15 - improved critical (unarmed strike)
 * 18 - dodge
 * 21 - epic weapon focus (unarmed strike)
 * 24 - epic prowess
 * 25 - undead shape
 * 27 - armor skin
 * 28 - outsider shape
 * 30 - mobility
 * 31 - great wisdom I
 * 33 - spring attack
 * 34 - construct shape
 * 36 - great wisdom II
 * 37 - great wisdom III
 * 39 - dragon shape
 * 40 - great wisdom IV

Skills

 * 23 spellcraft
 * 43 concentration
 * 21 discipline
 * 20 tumble
 * 43 animal empathy

There are 44 skill points left at level 40, which could be spent on hide or move silently.

Attack bonus

 * 25 = base attack bonus
 * +1 = strength modifier - we will have greater strength when shifted
 * +1 = weapon focus
 * +2 = epic weapon focus
 * +1 = epic prowess
 * 29 unbuffed AB

29/26/23/20/17 attacks per round

With flurry of blows:

27/24/21/18/15/27 attacks per round

These values will be greater due to greater strength when shifted, up to 46/43/40/37/34/46 (dragon shape, flurry of blows)

Armor class

 * 10 - base AC
 * +2 - dexterity bonus
 * +11 - wisdom bonus
 * +2 - armor skin
 * +4 - tumble

27 AC 60 AC when in dragon shape