luckiest RNG in my POE years

Desperately trying to farm some div for a specific ring that went from 200D to 400D to now 600D (missing the last 100D atm).
I finally dropped one voidborn key and really, really had to think about wether to sell (2 div are 2 div) or open.

In the past I had terrible luck with the keys, my biggest hit was 5c. But something made me open this key.

Well...
Thanks for the Mageblood. Can't believe my luck and that I can FINALLY get my last (overpriced) upgrade.