Wind Up Gun

 is a gun that fires purple lasers. The first half of the magazine pierces and deals full damage, and the second half deals 50% damage and does not pierce.

Trivia

 * This gun is a reference to a weapon from Futurama; specifically the episode "War Is the H-Word".
 * The fact that the weapon synergises with the Seven-Leaf Clover is due to said item also being a Futurama reference, specifically the episode "Luck of the Fryrish". The name of the synergy is a reference to the fact that Fry hid a seven-leaf clover in a copy of the Breakfast Club on vinyl.
 * When the Wind Up Gun is reloaded, it will play a segment of the nursery rhyme "Pop Goes the Weasel". The gun in the aforementioned episode plays the same tune.