If you look at artifacts from the early days of Magic (like Alpha/Beta/Unlimited ), on noncreature artifacts, you'll see that there's extra words on the type line: "mono", "poly", and "continuous"
Set List 01/18 Bulbasaur 02/18 Oddish 03/18 Chikorita 04/18 Charmander 05/18 Vulpix 06/18 Cyndaquil 07/18 Squirtle 08/18 Totodile 09/18 Maril 10/18 Pikachu 11/18 Chinchou 12/18 Mareep 13/18 Abra 14/18 Slowpoke 15/18 Natu 16/18 Sandshrew 17/18 Phanpy 18/18 Larvitar One would expect the contents of each booster pack to be random, and to some degree they are, but there are actually 6 different outcomes available
But, generally speaking, a fair graveyard deck might be one that seeks to reanimate or recur creatures for value, and try and win the game through swinging those creatures in for combat damage
Alternatively, it is also said that they represent the three core Confucian values
15.3 by 10.5 by 5.5cm Additional product info: Pokemon Card Game Double Deck Case Quagsire & Clodsire Appears