Hi Livertool,
The Scratchcards in this promotion all contain some Freespins vouchers or cash with a different probability to win, also to chance of winning goes up substantially per Scratchcard 🙂
EMERALD scratchcard has 25% chance of winning a prize.
SAPPHIRE scratchcard has 60% chance of winning a prize.
DIAMOND scratchcard has 100% chance of winning a prize.