How do you cast Warp Wood. I cast it and place my wand symbol over a chest and it says 1/4 (like magic missles you were dividing up). there also appears a circle magic symbol over my druids portrait which says cast only on these items. If I click the chest it doesn't cast, if I click the symbol above the portrait the # goes to 0/4 and disappears and cancels my attempt to cancel the spell. So whats the trick to casting this spell?