trading card sleeves 9 pocket Ultra Pro Pocket Protective Trading Card Pages 360 Pockets Binder Card Sleeves

Others are promotional cards handed out during events or to tournaments winners that gain value because they were printed in a very limited amount and thus very rare

Supay X EARTH Level 1 [ Fiend / TunerEffect ] ATK 300 DEF 100 When this card is sent from the field to the GY by card effect: You can Special Summon 1 "Oracle of the Sun" from your Deck, and if you do, double its ATK, also return it to the hand during the End Phase of this turn

It is, without a doubt, the most broken card in MTG history

However, those who have either the Alternate Art Secret or Ultra Rare Prize Pack Series versions of Mew can sell those in excess of $50