Let’s take a look at the PVE God Roll for Mechabre, a legendary arc sniper released in Festival of the Lost during The Witch Queen. Mechabre is an aggressive frame with high damage, high recoil. It has a range of 74 and handling at 26. This sniper rifle has a reload speed of 30 with a reload time at 3.42 seconds. Here are some base stats.

This roll for Mechabre will increase reload speed and damage to boss enemies. A great weapon to pair with a power linear fusion rifle or and exotic sniper heavy weapon. Here is the PVE God Roll for Mechabre.

Barrel
Smallbore increases range by 7 for a total of 81. It also increases stability by 7 for a total of 35.
Magazine
Alloy Magazine. Faster reloads when the magazine is empty.
Perk 1
Triple Tap. Rapidly landing precision hits will return 1 round to the magazine.
Perk 2
High-Impact Reserves. Rounds at the end of the magazine deal more damage.
Mod and Masterwork
Reload masterwork increases the reload speed by 10 for a total of 40. Boss Spec for a 7% increase in damage to bosses.

Now you know the roll for Mechabre for PVE. You can get this weapon by completing the Festival of the Lost activity. Here is a great Youtube video on how to farm Spectral pages for Festival weapons by Mano Destra. Get to grinding Guardians.