Mewtwo (Black Star Promo #12 and #14) represent the early promotional era of the Pokemon TCG, when cards were distributed through an eclectic and sometimes bewildering array of channels including magazines, mail-order promotions, league participation rewards, and retail partnerships
If two or more effects attempt to modify how many counters would be put onto a creature you control, you choose the order to apply those effects, no matter who controls the sources of those effects
Art lovers particularly appreciate the full art illustrations, which are highly detailed and dynamic
They only used to be given out as promotional items or at other rare events
Once you decide to keep your hand, you put X cards on the bottom of your library, where X is the number of times youve mulliganed