Aurai
We found him in a Blind Forest.

Arcane: Stealth
Base Rarity: Common
Troop Type: Fey, Beast
Troop Role: Assassin
Troop Id: K06_10 / 6343
Max skills: 23    27    10    12
Kingdom: Forest of Thorns
Kingdom Id: 3015
Trait #1: Nature Heart
Gain 1 Life for each Green ally.
Trait #2: Nimble
Immunity to Entangle.
Trait #3: Nature Aura
All Green Allies gain 5 to all Stats.
Spell: Sacred Dance
Description: Deal [Magic + 3] damage to an enemy. If there are 13 or more Green Gems, deal triple damage. Create a Leafstorm.
Mana Color: Green
Mana Cost: 11
Spell Id: 7495