Yo,

does anyone got boxes from gathering from new event? I spend 500 energy, a friend of mine 700 and we didnt get anything from butchering and flowers

It's rare rng similar to this when you collect ore. Sometimes 0 per 600 energy, sometimes 5 per 600 energy.

I had it once for about 150 energy and it came up 2 Buried Trace so 2 chests same time.

Also remember about: Gathering Mastery applies to the chance of finding buried trace.