Infinity is an enchantment to bows that prevents regular arrows from being consumed when shot. 1 arrow is needed to start.
Usage
With this enchantment, the player may shoot unlimited arrows as long as they have at least 1 arrow in their inventory. Fired arrows cannot be retrieved except in Creative mode (where they are erased instead of added to the player's inventory).
Infinity has no effect on tipped and spectral arrows; they are still consumed as usual.
Incompatibilities
Mending and Infinity are mutually exclusive. However, if combined with commands, both enchantments function as normal.