Simply click the green flag to generate a new card. Currently only generates troops. Elixir cost is based off of how powerful the card is.
Credit to Supercell for the game this is based off of. 2/20/17: Small change Damage per second is now rounded 11/12/16: Small Update Moved some sprites and added Damage Per Second 10/15/16: Update New attributes, creature types, adjectives, abilities, and more!