Ysera

Ysera, the green Dragon Aspect, was charged with the protection of the Emerald Dream, but also watched over Azeroth. To the druids, she was known as the "mother" of Cenarius, but since she is a dragon, this is not literal. Ysera was one of the Dragon Aspects that gave some of her power to the Demon Soul, not knowing Neltharion would betray the Aspects.