The projectiles fan out in an arc, facing the direction that the skill is aimed. The spread of the arc is controlled by the positioning the mouse cursor. Positioning the cursor close to the character will result in a wide arc, while positioning it at the edges of the screen will result in a narrow arc. This gem has a wider minimum spread angle than Lesser Multiple Projectiles Support.

This gem can be combined with Lesser Multiple Projectiles for a total of 6 additional Projectiles. Poison: The "less projectile damage" modifier on the gem doesn't affect Poison damage, so GMP can be very useful if you use a skill that hits the same enemy multiple times with Poison, like Barrage or Tornado Shot.