From Thorium Mod Wiki
The Penguin Wand is a Tool of immense power, boasting the impressive ability to "bring the Moon Lord to his knees". It is crafted from Penguin Heads that are dropped by Penguins, a deceptively nimble foe.
- Despite its benign appearance and the ability to get the item very early on, its efficacy does not degrade or improve as the player progresses through the game. It is just as good during the early game as it is during the end game.