Bauplan: Spriggan-Feuerschale

Seems to be part of the Fury of the Spriggan event, which takes place between May 24 - June 13. More details here.

drop only from purple chest / purple chest drop limit 3 times per day

Got it from a purple event chest

Completed Fury of the Spriggan event around 100 times past 2 days and still no schematic. With a 2% chance, and an increasing chance per kill I doubt it actually drops outside of the Major/ Epic caches. I'm guessing the chance starts at 2%, and only increases 3 times per day, and only those 3 times are you able to get the schematic.

Not sure if this is true, but someone in global also told me it increases 0.4% per kill, and caps at 20%. So 10 days in, your chances will be 2%+(30x0.4%)=12% chance. On the final day, assuming the event lasts 21 days, on your final day, the chance will be 27.2% (but caps at 20%), assuming the increasing number of 0.4% is correct and it only increases 3 times per day.

@lootie157 the chance increases as you open the "Major" boxes.

Does the 2% drop chance increase on EVERY actual kill or just daily first 3 kills?

Where does this drop? Didn't see it during the pass at all.