The All-Star Expansion brings some heavy hitters to the game as well as the following keywords: Golden Glove, which cancels 3 hits; Magna Glove Plus, which adds an additional effect to the Magna Glove; Bunt, which converts all Gloved or Canceled Hits to Bunts; Leaping Catch which cancels 2 Home Runs; and more.

-description from publisher

This is Expansion #11 in the Baseball Highlights 2045 range. It contains
– 15 All-Star cards
– 12 Promo cards

The All-Star cards are very powerful, and not to be used in the same way as the other expansion cards. See this post by the game’s designer for more information:

How to use the new All Star Expansion and promos in Baseball Highlights Bases Loaded