I've always considered using it for Oracles (Atheon) in VoG but I never actually do. Always run my trusty loadout: VoC / Icebreaker / Corrective Measures Fusions only do marginally less damage than sniper crits on Atheon from what I remember. Just don't want my Oracle killer and Atheon DPS gun using the same ammo. It's also super duper rare. I've gotten 2 in over 100 raid clears (1 Timepiece btw).