Cool thanks, I'll experiment a bit.
PS: Cloning the cloning staff (with more than 1 charge) is indeed OP :)
Limiting it to 1 charge max should solve it I think (Need to check if cloning a pile of items only clones 1 or the whole pile).
New monster: Goo. Slow spreading entity (The old Boulderdash games used to have it). Similar to web, but hard to kill and spreads through the entire dungeon consuming everything in its path (items, maybe even monsters and damaging the player each time it spreads on top of you). It is susceptible to fire, which is the best way to kill it. Closing doors (iron more so than wood) slows it down. Consuming an item/monster may give it a growth boost? Just spouting ideas.