I must admit what I'm saying with the tumble rules is that backflipping and cartwheeling your way through an unruly undead mob is signifigantly harder than just getting through on speed and cunning.  :-)   (which is kind of unfair of me, but I think I've given you guys enough bennies to get through the challenge okay)<br/><br/>I'm also willing to let readied actions to use the wand pre-empt initiative rolls from undead who spot you, so the main penalty for failure, if you're managing logistics properly, is loss of charges on your wand.  (and obviously it's trouble if two or more of you fail in the same round)