Level 1
Hemorrhaging Wounds: Minions and mercenaries remain affected by bleed effects until their death.
Savage Defense: While in Bear Form you may Block a basic attack once every 8 seconds. Every time a bleed deals damage the cooldown is reduced by 1 second. Max of twice per second.
Regeneration Master
Seasoned Marksman
Level 4
Prey Scent: Rip causes enemy heroes to leave behind a blood trail that grants you vision while you remain on the trail.
Taste for Blood: Mangling a bleeding enemy heals you for (40 + 30 per level) health.
Lumbering Charge: Skull Bash travels 50% farther in the same time.
Rupture: Flavored Envenom
Level 7
Savage Reach: Increases the range of Rake by 100%.
Cenarion Shield: While in Bear Form, regenerate 30% of all damage taken over 20 seconds. Effect ends upon changing forms.
Bloodrage: Applying a bleed effect to an already bleeding enemy increases their durations by 1 second.
Follow Through
Level 10
Form Perfection
Incarnation
Level 13
Concussion: Skull Bash stuns enemies for .5 seconds upon impact.
Tiger's Fury: Hitting an enemy with a Bear ability reduces the cooldown of Cat Form abilities by 2 seconds.
Berserk: Activate to immediately refresh Cat Form abilities and increase the potency of their next use by 30%. Amplified bleeds will overwrite the previous application.
Thick Fur (Flavored Spell Shield): Ursa Major's damage mitigation is increased to 35% against ability damage.
Giant Killer
Level 16
Renewed Ferocity: Bleed effects will heal you for half of their damage dealt while in Cat Form.
Spiral Cut: Rake's damage and range is increased by 30% and strikes all enemies around you.
Adaptability: Form Perfection's charges regenerate 25% faster, and Incarnation's bonuses are increased to 30%.
Ferocious Bite (Flavored Blood For Blood): Deals up to double damage based on the enemy's missing health, healing is unchanged, leap to enemy on use.
Level 20
Feral Mastery: Lacerate now deals an additional half of its damage over time instantly. You may now move while maintaining Pounce.
One with the Beast: Incarnation is permanent, combat trait bonuses are halved, health increased by 25%.
Bolt of the Storm
Nexus Claws (Flavored Nexus Blades): Cat Form attacks do not slow, instead deal 40% more damage.
Heroes of the Storm Build Guides
But now that I know that it sounds a lot better. I would still make it so that you choose either the cat or bear form trait at the beginning of the game as your first talent choice. I think it's a bit too much if a hero can be both a tank or a high damage dps when needed during one match. Or at least I assume the bear form is supposed to be like a tanky Warrior and cat form a melee Assassin.
Mangle and Skull Bash are Bear Form.
The E ability for both forms is switching between Shapeshifts.
Incarnation puts you in a humanoid form, not a human form. The inspiration was the Feral Druid ability Claws of Shirvallah. http://i.imgur.com/6JEfV0e.png
Incarnation is actually potentially TOO powerful, as you gain all abilities, modifications of those abilities, and traits that benefit either form for the duration. Look through the talents and note how many things would affect either form. Incarnation gives you all of those should you choose them.
Edited concept to clarify functions.
Is Rip the bear form's ability and Rake the cat form's or visa versa? Just wondering why there's four Basic Abilities instead of three. Also the second heroic, Incarnation, sounds just outright silly. I mean, really? He can use all of the Basic Abilities in his HUMANOID FORM? Tearing and ripping his enemies apart with his bare elven hands instead in his animal form with deadlier claws and fangs? That's just dumb. Plus I don't think there's much point to be able to use the abilities of both forms for ten seconds if it gives you only one more basic ability Rip/Rake.