The Star Block is a type of Hex in Mario Party DS.
Description[]
A Star Block can be obtained from a Hex Area at random, although like the Coin Block, a Star Block is less common than the other Hexes. As with any other Hex, the character with a Star Block can place it on any Blue Space or Red Space up to five Spaces from where they are.
If any character, including the player's character, lands on a Star Block, they have to jump at a special Dice Block with the numbers 1-3. In doing so, the number they land on is how many Stars they receive.