A Change of Seasons is the third installment of 40 fixed cards for the A Time of Ravens expansion to the A Game of Thrones card game, based on George R.R. Martin’s bestselling A Song of Ice and Fire saga. It contains 20 different never-before-seen cards designed to augment existing decks and add variety to the A Game of Thrones metagame. This is not a stand-alone deck; an A Game of Thrones: The Card Game core set is required to play. Launch date: Dec. 16, 2008.