Impeding Air Force

Impeding Air Force enters the battlefield tapped
When Impeding Air force enters the battlefield
create 10 2/2 bird creatures tokens with flying
{3}{u}{r}{t} Create a 5/5 elemental creature token
with flying and trample
{4}{u}{u}{r}{t} Sacrifice Impeding Air Force create
10 5/5 elemental creature tokens with flying