This build uses the Shifter Paragon class from savevsdm.
LEVEL CLASS ONE CLASS TWO FEAT ABILITY
LVL01 Sh Par 01 Druid 01 1 Feral Heritage I, Wild Empathy, Beast Spirit, Nature Sense, Wild Empathy
LVL02 Sh Par 02 Druid 02 - Improved Shifting, Woodland Stride
LVL03 Sh Par 03 Druid 03 1 Feral Heritage II, Ability Boost, Trackless Step
LVL04 Barbar 01 Druid 04 - Fast Movement, Rage 1/day, Reckless Nature
LVL05 Barbar 02 Druid 05 - Uncanny Dodge, Wild Shifting
LVL06 WT Mas 01 Druid 06 1 Weretouched I
LVL07 WT Mas 02 Druid 07 1(BS) Wild Empathy
LVL08 WT Mas 03 Druid 08 - Weretouched II
LVL09 WT Mas 04 Druid 09 1,1(BS) Frightful shifting, Venom immunity
LVL10 WT Mas 05 Druid 10 - Alternate form
LVL11 Barbar 03 MSpeak 01 - Augment summoning, Moonspeaker shifting, Trap sense +1
LVL12 Barbar 04 MSpeak 02 1 Energy resistance (first), Rage/2day
LVL13 Barbar 05 MSpeak 03 - Extended summoning, Improved uncanny dodge
LVL14 Barbar 06 MSpeak 04 - Thelanis tie, Trap sense +2
LVL15 Barbar 07 MSpeak 05 1 Wild shape (1/day), Damage reduction 1/-
LVL16 Barbar 08 MSpeak 06 - Wild shape (2/day), Shifter integration (ability bonus), Rage/3day
LVL17 Barbar 09 MSpeak 07 - Wild shape (3/day), Energy resistance (second), Improved natural attack, Trap sense +3
LVL18 Barbar 10 MSpeak 08 1 Wild shape (Large), Damage reduction 2/silver, Damage reduction 2/-
LVL19 Barbar 11 MSpeak 09 - Extra shifter trait, Greater rage
LVL20 Barbar 12 MSpeak 10 - Energy immunity, Rage 4/day Trap sense +4