Bungie didn't give them proper names, so I'll do it myself.
Osteo Striga catalyst: Corrosive Conversion; named so for the toxic nature of the gun, and the ammo return tying in with the gun's flavor text.
Grand Overture catalyst: Shock and Awe; named so because it gives both a blinding effect and a Chain Reaction effect.
English
#destiny2
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2 RepliesGrand Overture is aids. I tried it in a Master nightfall WITH Arc burn and couldn't even kill a champion with it before running out of ammo, and said "oh so this is why I literally never seen a single player using this since it came out 👁👄👁"