I have seen guides on this. I don't care if anyone believes me but it does work. Get exactly 5555 yew longs and nats. Wear NOTHING except for a staff. Only keep the yew longs and nats in your inventory. Turn off private chat, trade, and public chat. Go to the least populated member world. Go upstairs in seers bank and stand in the far corner where you can barely fit. High alch. DON'T CLICK ON YOUR STATS. That is how I have gotten 3 out of my 4 mimes. I have heard this from multiple guides. Hope this helps, ~Joe