Yelets

Yelets is a powerful Hardmode yoyo. After a Mechanical Boss has been defeated, this yoyo has a 0.5% (1/200) chance to drop from any enemy killed in the Jungle, Underground Hallow, Underground Corruption, Underground Crimson, or Ocean as well as being dropped by enemies from the Martian Madness event. Its best modifier is Godly.

Trivia

 * Like many yoyos available in Terraria, the Yelets has a real-life analogue produced by One Drop YoYos. The small icon in the tooltip of these yoyos is the One Drop logo.