I-Slasher

I-Slasher is one of Leona's Special Moves in The King of Fighters series, debuting in The King of Fighters '97 and remaining part of her move list in The King of Fighters '98 and Ultimate Match before never appearing again.

Description
Leona flips backwards before bringing her hands to the back of her head and then moving them forward, throwing out a crescent-shaped projectile that moves slowly forward before boomeranging back to Leona who catches it.

Strategy
The I-Slasher is infamous for how little usage it has. Due to how slow it is, the projectile itself is easy to block. While this special move is happening, Leona herself is locked into the animation, preventing her from being able to block or attack an opponent until the animation is over.