I've been farming for the Graviton Lance catalyst for months now, spamming Vanguard Playlists since my collections tell me it comes from Strikes. However, the majority of my Vanguard Playlist activities are actually Battlegrounds, and not Strikes, these days. Can catalysts like this drop from these BGs? Or am I going to have to actually spam specific strikes launched from Destinations now (which would be kinda miserable)?