zygarde ex pokemon card {117/080}Mega 54/124 / Ultra Rare Card Type / HP / Stage Pokemon | Toys | Mega

This means that the opponents can't use any heals or energy abilities on their supporter cards or any other skills that they might need during the match

Morpeko [D] Explosive Discontent: 30x damage

Nassif saw something different, I'm assuming more of a "good stuff" concept, but I consider it reasonably well established that the idea turned out to be ill-conceived

One of the best features of Rakdos Sleeves is the improved seal strength

But this only works for cards found in main sets and to a lesser extent special sets since they're usually kept in production for a while (and if what TPCi said in the past is true, will continue to be printed as long as there's demand for 'em and they're not rotated out), this rule doesn't work for promos since they're usually only given away during a certain window of time and given a limited print run that's long enough to fit the predicted demand