Dinosaurs and birds of prey.
Mantle of the Hawk
Base effect gives +4 Spot, +2/Essentia. Shoulder bind gives fly speed (30', good), +5'/Essentia. Crown bind removes range limit for Sneak Attacks, and gives 1d6/Essentia Sneak Attack damage that only works with ranged weapons. Totem bind gives Malphas' Bird's Eye Viewing ability.
Jaws of the Tyrant
Base effect gives +4 to bull rush, +1/Essentia. Brow bind gives a standard action Roar that makes people frightened, +1 DC and 5' radius/Essentia (maybe Crown, but an AoE at-will fear is probably too powerful for level 2). Totem Bind gives 1d10 Bite, +1 hit&damage/Essentia. Throat Bind gives Swallow Whole, 1d6 each Acid and Bludgeoning/Essentia. Heart bind makes grow a size category, Soul bind makes you grow two. Not sure what the +Essentia abilities for Heart and Soul should do - maybe Natural Armor?
Stegosaur Plates
Base effect gives +1 Natural Armor, +1/Essentia. Foot bind lets you move normally in medium or heavy armor or while encumbered. Waist bind gives tail attack, 1d8, +1 damage (not hit)/Essentia. Shoulder bind gives a no-hands Shield bonus to AC (3, +1/Essentia), and you can't be flanked.