There are 3 special ??? skill cards for Emeral that are the ones to the right of the Ult. Cards. There are a ??? Sonic, ??? Knuckles, and a ??? Amy. Sonic's ??? is a homing attack type skill, Knux's ??? is a 3X Meteor Crush Skill and Amy's ??? is 3X Gifts. These skills are very strong and can KO someone in 2 hits! Hope I helped. ;)