I would like a scratch card.
GRAT-ta e VIN-chi — the 'ch' in 'Vinci' is a hard 'k' sound, as in 'king'.
Use this to buy a scratch card (lottery). You can specify the price point — they range from €1 to €10 or more. Very common as a small gift or impulse purchase.
'Gratta e Vinci' literally means 'Scratch and Win' and is the brand name for Italy's official scratch-card lottery, managed by Lottomatica. The phrase 'vorrei' is a polite conditional. Specifying a price is the easiest way to select a card.
Un Gratta e Vinci da cinque euro.
A five-euro scratch card.
'Da' here indicates the denomination/price point
Ne prendo tre da un euro.
I'll take three one-euro ones.
'Ne' replaces 'di Gratta e Vinci' — a very natural Italian construction
Quale porta più fortuna?
Which one brings the most luck?
Lighthearted question often asked; shopkeepers enjoy the banter
Italy is one of Europe's largest markets for scratch cards and lottery games. 'Gratta e Vinci' cards are enormously popular across all age groups. It is traditional for the shopkeeper to wish 'Buona fortuna!' when handing them over.