Bird of Paradise

Birds of Paradise are popular exotic pets for the rich of ravnica. They come from the warmer and more natural deeper regions of the Gruul Territories, and are favored for their high price by orzhov. Their feathers are popular with children and wizard apprentices. Their feathers will produce a pretty spark of light when snapped. They also release small amounts of mana which are used by magicians in training.

Sources:

https://scryfall.com/card/rav/153/birds-of-paradise