Energy Core

65% defense basically, and it's 105% if you use shark v3 instead

So i found a server with soul reaper and killed him (I'm using buddha v2) with another guy and i got hallow scythe, then on my first random surprise i got hallow essence and this time there were 2 other ppl with whom i killed him (one of them had cyborg at least v3) and then i got hallow scythe again got it to 150 mastery (I have 2x money and 2x mastery).