Murmuration [BLC]

Murmuration

Enchantment

Birds you control get +1/+1 and have vigilance.At the beginning of your end step, for each spell you've cast this turn, create a 1/2 blue Bird creature token with flying named Storm Crow.

Once the crow birdfolk realized augurs were using the shapes of their murmurations for divination, they decided to have some fun with it.