Professional grading companies such as Professional Sports Authenticator (PSA) evaluate cards on a scale from 1 to 10
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying (such as a flashback cost), add any cost increases (such as kicker costs), then apply any cost reductions (such as that of Baral's first ability)
Each Speed Duel GX: Duelists of Shadows Box contains 228 total cards, all usable in Speed Duel: 200 Commons 20 Skill Cards 8 (of 24) Secret Rare Cards 3 of the 8 Secret Rares in every box will be the 3 Sacred Beasts: Uria, Lord of Searing Flames , Hamon, Lord of Striking Thunder , and Raviel, Lord of Phantasms
Please note: Due to the overwhelming number of not-factory-cut (NFC) Square Cut cards from the Wizards of the Coast (WotC) era, CGC Cards will not grade any Square Cut examples without a proven provenance back to a WotC employee