[Destiny 2] Sturm + Crimson (Using the ornament glitch) 

The resulting glitch weapon functions as what ever weapon you cross it with so example if you crossed Izi with Ace you would have a gun that has the look of izi(may look buggy) but the functions of Ace including firing type, crosshair and sound effects. A gun with Ace as its functional part will also gain the glowing flame effect when the perk Momentos Mori is active.