Lucky Candy is a booster in Candy Crush Saga. It debuts in Level 131. It releases candies that can meet the objective. For example, a Striped Candy is produced in levels requiring Striped Candy and/or combos, a Wrapped Candy in levels requiring Wrapped Candy and/or combos, or a Colour Bomb in levels requiring Colour Bomb and/or combo, and normal colour candies in levels requiring certain amount of coloured candies. It is only used in Candy Order Levels. It looks like a pink ball with a check-mark.
They appear to be metallic versions of normal candies.
Lucky Candies will only give candies related to the orders. If the order tells you to gather certain colors, they are not very helpful because they transform into one of those colored candies. If the order tells you to combine special candies or detonate them, it will give a special candy involved in detonation or combination.