A weapon created and used by an elite fighting force in their journey through a certain other amorphous and time-distorting dungeon. By placing it against your head and pulling the trigger, you stand fearless in the face of death and awaken an inner power.
When fired, a short ranged, low-to-medium damage shotgun-esque blast of blue and white projectiles fires out behind the player, in the opposite direction of where they're aiming. The gun fires into the player and the projectiles come out on the other side.
If the player has any passive items that activate when they take damage (Monster Blood, Heart of Ice, etc.) all of the effects activate at the same time when the Invoker is fired as though the player has been hit, but without reducing their remaining health.
Only one ammo per clip.
On it's own it's practically worthless. But with the right items, it has the potential to be incredibly powerful. The same can be said for a lot of the items affected by the Invoker.
Based on the Evoker from Persona 3.
Yes, the sprites are supposed to be facing the wrong way.