On very rare occasion standard relic node will become active once the gathering is done.
We will be warned about "initiating security protocol" but fear not, only sometimes a single, weak drone is spawned. (possibly bug - I've encountered 3 of them and only once the drone have been spawned)
Act quickly, try minning as long as you can and if the drone spawns try hitting them both.
Succesfull approach can give even 10 Standard Omni-Plasm.