Victory's Herald

Flying
Whenever Victory's Herald attacks, attacking creatures gain flying and lifelink until end of turn.

Stormfront Pegasus

Whenever Graceful Cat attacks, it gets +1/+1 until end of turn.

Flying
Vigilance (Attacking doesn't cause this creature to tap.)

Flying
When Dawnfeather Eagle enters, creatures you control get +1/+1 and gain vigilance until end of turn.

Target creature gets +2/+2 and gains flying until end of turn.

Creatures you control get +2/+1 until end of turn.

Destroy target attacking or blocking creature.

Impeccable Timing deals 3 damage to target attacking or blocking creature.