yugioh scrap cards OCG: SD48 - Synchron after that Scrap Dragon - Yugipedia

Once you know the grades of your cards, check what the same cards have sold for online so you know their value

Most sliver decks feature all five colors and can benefit from a few colorless creatures to pick up all those abilities

They really are not that much ($5$15, usually depending on the card), and they often come signed or with a cool sketch on the back

Let's look at that Bloodfire Colossus again

Graded Population Report: Alakazam [Reverse Holo] #1 Visualize the distrbution of grades in the chart

If a card that has mutate also has flash, like Pouncing Shoreshark, you can flash it in for its mutate cost since its an alternate casting cost rather than an activated ability