Lacerate is a new skill going to be included in Patch 2.3.0 for Path of Exile, which is now called Prophecy. This new skill will give sword builds more versatility and safety, rather than having to stack up reave or go spectral throw.
The skill performs two slashes; One aimed just to the left, then one just to the right. The slashes damage all enemies in a cone in front of the attacker. Each slash does less damage than a single hit from Cleave, but the two slashes overlap in the middle, hitting enemies in front twice. This makes the skill great for taking on tough enemies surrounded by weaker ones. If you’re using just one weapon, it slashes twice with that weapon, but if you’re dual wielding, it uses the main-hand weapon then the off-hand weapon.