About 100 runs, at least half on madness and got 2 primordials, so they are dropping more or less. Frontier coins on the are hand are even rarer for me.

My team clears madness in 4-5 minutes:

DDE - eclipse (or whatever the name of the 6-set purple set)
S Corrupt rescuer - green 6 set
Blue Shinobi - oracle
Redan - Destiny/Life