The invisible spike grenade kills effectively. This perk is only accessible after the initial spike grenade dissipates. Ull find this perk listed under.....cheats/bugs/hacks section after staring at redbar and lagswitch players beat u over and over again in trials of Osiris although they're suppose to have the disadvantage. Fix ur game Bungie
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It happens when you use the Spike Grenade and Lockdown. The grenade is visible for its normal duration but becomes invisible for the extended duration from Lockdown. It is very annoying and needs to be fixed.