Korgha, the Tundra Augur

Vigilance
Whenever Korgha, the Tundra Augur attacks, create a Legendary 2/2 white Bird creature token with flying and lifelink named Fleywer, Feather Adept tapped and attacking.
{r}{g}{w}, {t}: Add {r}{r}{g}{g}{w}{w} to your mana
pool.