Power Stars (Japanese: パワースター, Pawā Sutā) are collectible items that can grant Mario access to more levels in-game, unlike the similar-looking Super Stars, which only give brief invincibility.
In Super Mario 64, Super Mario Galaxy, and Super Mario Galaxy 2, when the star for any given level has been collected, playing the level again will turn the Star into a translucent version of itself. This Star can be collected, but it will not add to the player's total Star count.
Powers and Stats
Tier: Varies from High 4-C to 3-C
Name: Power Star
Origin: Mario Bros
Classification: Star, Cosmic Artifact
Attack Potency: Varies from Large Star level to Galaxy level (Can create realms in pictures that contain at least a star and black holes with this level of power. It can also create realms with numerous stars and is stated to be comparable to Lumas by Rosalina, such are capable of becoming comets, planets, stars, and galaxies)
Durability: Varies from Large Star level to Galaxy level
Range: Stellar to galactic range
Weaknesses: None notable