mcdonalds pokemon cards holographic Pokémon Charmander 9/25 - Promo - 25th Anniversary Pokemon | Toys | Pokmon

One of the defining features is its smart signal relay architecture

In the Phyrexian Praetors: Compleat Edition Secret Lair, there was an incredibly small chance that you could open a serialized Viscera Seer number between 001/100 and 100/100, and the whole of the rest of the card was completely reversed

card from the Stardust Overdrive set - Once per turn, if you control this face-up Defense Position monster when your opponent Normal or Special Summons a monster(s), you can change that monster(s) to Defense Position

Clouding is basically an effect of microscopical damage to the card surface, that might add up over time to produce this dull effect