Current version can be seen here. Muffet has the interesting ability to heal its owner when it kills a monster, making it useful in most decks that need some sort of healing, in particular Kindness. Initially Muffet had 6atk and 6hp however in Alpha 2.7 this was changed to 4atk and 9HP, possibly in an attempt to make her last and therefore heal longer as a buff. After Beta 5.3, in keeping with standards set by other buffs during this update, as well as to give more use to the Spider card from the previous update, Muffet was given the ability to summon a Spider upon killing a card when attacking.