I'm back for battle! So let's see if you've got the skills to match your bark, mutt!
— Shek Warrior War Leader
Return for Blood is an event that can trigger if you refuse to pay tribute during the Tribute Round or Return for Tribute events. It also requires that Bayan, Esata the Stone Golem, Seto, Bugmaster, and the Holy Lord Phoenix to all not be killed or captured. If even one of them has been, the raid will fail to trigger. It will also fail to trigger if the player is allied to the Shek Kingdom.
If all the conditions are met, the Shek Kingdom will trigger an assault on the player's base. This assault will consist of 1-2 squads, each made up of 5-8 Shek Warriors and 0-1 Shek Scouts, led by an additional Shek Warrior.
Once the assault arrives the leader will taunt the player in a short speech, then attack the player's base and characters. If victorious, the assault will leave the player's base shortly after, and Return for Tribute will trigger in 72-150 hours. If the assault is defeated, Shek Challengers will trigger in 120-180 hours.