Hero Leak: Nidalee - The Beastial Huntress

Nidalee - The Bestial Huntress

As this hero is not released, expect any information here to possibly change.

Prowl (Passive)
Moving through brush increases Nidalee's movement speed by 25% for 2 seconds.
When in Cougar form, she is also stealthed for 2 seconds.

Aspect of the Cougar
Nidalee transforms herself into a cougar, gaining new abilities and increased movement speed in the process.
Levelling up increases Pounce, Swipe, and Takedown damage, as well as Takedown's damage per Dripping Wound stack.

Bushwhack/Pounce
In human form, Nidalee lays a damaging trap for unwary opponents that, when sprung, reveals the target and reduces their armor and magic resistance for 7 seconds. Traps disappear after 6 minutes. Also applies the "Dripping Wound" debuff.
As a cougar, she pounces forward, dealing a small amount of damage in a small radius when she lands. Also applies the "Dripping Wound" debuff.
Levelling up increases the Trap's armor/magic resistance debuff and (increases/decreases?) Trap mana cost.

Javelin Toss/Takedown
In human form, Nidalee throws a spiked javelin at her target that increases in damage the longer it's in the air, to a maximum of 300%. Also applies the "Dripping Wound" debuff.
As a cougar, she grabs her opponent by the throat and attempts to bring them down, dealing additional damage depending on the number of Dripping Wound stacks. Also applies the "Dripping Wound" debuff.
Levelling up increases Javelin damage and (increases/decreases?) Javelin mana cost.

Primal Surge/Swipe
In human form, Nidalee heals her target and grants them an attack speed bonus for 8 seconds.
As a cougar, Nidalee claws nearby enemies, dealing base damage plus extra. Also applies the "Dripping Wound" debuff.
Levelling up increases Primal Surge's heal amount and Primal Surge's attack speed buff.

Advice

Use brush to your advantage! Moving in and out of brush can heavily alter your effectiveness in battle.
In team fights, start by harassing with your javelin toss, and then switch to cougar form to chase down anyone who flees.
I have no idea what Dripping Wound does. Probably a damage over time debuff.