Click green flag twice to start (dont click just once as there is a bug that occours if you click it just once.) Click the REQ pack you want to open it, then you will get a number of cards from it (5 from bronze, 10 from silver, 15 from gold, 3 from memories of reach, 1 from voices of war.)
Credit to 343 Industries / bungie for making Halo, credit to Halo Waypoint for the REQ sprites.
