When you're trading your yugioh cards to either complete your collection or your deck keep this mind. Not all rare super rare or ultra rare cards are useful to a player. What this means is that the rare cards that don't show up in tournament decks are easier to trade for when you're trading with a player. On the flip side a rare card that's playable might be easily traded for when you are trading with a collector. The rarity of a yugioh card depends on the trader's…