Flys

{x}{x} Bring on to the battlefield X 0/1 fly's
Flying Hast Infect and Wither
You get an emblem with Creatures you Control
gain each creature gets +1/+1 for each other
creature on the battlefield that shares at least one creature type with it
(For example if two Fly and a Fly are on the battlefield, each gets +2/+2.)
This counts ONLY for FLY under your control Sacrifice them at the end of battle