Daichun, Captain of Talons

When Daichun, Captain of Talons enters
the battlefield, create two 1/1 blue Bird
creature tokens with flying.
{1}{w}, Sacrifice Daichun, Captain of Talons:
Creatures you control with flying get +1/+1
until end of turn. Activate only as a sorcery.
"Fly, friends, and bring good tidings."