Task 10 for the Y'shaarj special event is a piece of cake! The trick here is to bring along as many minions as you can so Y'shaarj can borrow lots of attack. Your damage output will vary depending on how leveled up and upgraded your Mercs are. However, head into an easy bounty (I used 1:1) and he'll clean up in one shot. I got lucky too, as the first encounter was 2 fighters, so I did almost 300 damage in one attack. Have fun!