Coliseum trick to improve your chance

[Triondor]

Have a friendly mage helping you, or be yourself a mage. Place portals all around and encourage all mages to do so - to be evil you'd better place a feast before it on that place. Whoever clicks the portal wont be able to come back.

= profit?

[plsplspls]

You can also place a mole machine to LBRS, I almost fell for that the first time I entered the place:P Not really an exploit tho.