Ok so miracle worker costs two so maybe it costs two each time but if you have say 10 mana you can deal 5 damage if the charge aura is down if you have two miracle workers. When one dies play the second one and so forth every turn you will start with one miracle worker in hand and be able to deal a lot of damage since you have interrogator then that could mean out of no where you have 5 attacks which could be 20 damage in one turn. They have to die though and the opponent has to be nearby so to speak or you could use the artifact that deals one every time a minion dies.