Luck

Luck is a status effect which increases the probability of finding high-quality loot from fishing or naturally-generated chests. The higher the level of potion imbibed by a player, the higher the chance they will find high-quality loot.

Like all status effects, it can be removed by drinking milk.

Source

This status effect can be gained from three sources:

• Potion of luck
• Arrow of luck
• The /effect command

Opposed Effect

There is a Bad Luck status effect exclusive to Minecraft: Java Edition, which functions in the opposite manner as "good luck". This negative effect decreases the chance that a player will find high-quality loot. There are various levels of this status effect; The higher the effect level, the lower the quality of loot.

Similar Effects

• The Looting enchantment grants a player an increased chance of finding rare loot, and also additional loot.
• The Fortune enchantment gives a player a chance of getting more than one item from mining ores.
• the Luck of the Sea enchantment gives the player better loot while fishing, making it less likely for junk to be caught.

Trivia

• With custom loot tables, chests and mob drops can be affected by luck.