Fleet Beacon

Cannot attack or block. Shield 2. Costs {4} less if
you control a building named Stargate.
{t} : Search your library for a card named "Air
Weapons", "Air Armor", or "Anion
Pulse-Crystals" and put it into your hand, then
shuffle your library.
{t} : Add {2} to your mana pool. Spend only to
cast creature spells with Flying.