This promo consists of asymmetric starting cards. It was included in the Kickstarter version of Cytosis and now its available as a promo for other editions in some languages. Each Epigenetic Modification Card gives a player a unique ability that they may use throughout the game. It is advised not to use the Epigenetic Modification Cards until players have played Cytosis and are already familiar with the game. The Epigenetic Modification Cards may be used with the Base Game of Cytosis or combined with the Virus Expansion. —user summary