"
The Meowmere is a melee weapon dropped by the Moon Lord that fires a cat-shaped projectile trailed by a rainbow that doesn't require mana or ammunition. It's affected by gravity, and will bounce four times, piercing multiple enemies, before disappearing on the fifth hit. In addition, it makes a "meow" sound when the cat projectile hits a wall.

Nya nya nya-nya nya-nya nya nya-nya nya-nya nya nya-nya-nya nya nya! (Nyan Cat) XD"