king's empire the good outcomes from attacking Nether King

Good Nether King has arrived again but I began to wonder why I have not gotten any rewards as other alliance members are actively taking part in this event.
A few Nether King that I get to attack. Since Jarvis is already at level 35, I just sent his troops up to 100k Squires plus some 20k battering ram.
Not bad item drops I guess.
This is the most important part. You could share the strength of your active alliance members share of Alliance Guards. Just attack at least one level 1 Nether King to share this benefit. Good luck comrades.