You may stash the Leg for the sole purpose of opening the cow level, if you wish to, when you kill Baal. You may not equip it as a weapon (unless you Imbue it in act 1)
skunkbelly said:OTHER ITEMS/GOLD: You may use any of the following items that you find: charms, socket fillers (gems, runes, jewels), keys, potions (including throwing potions), arrows and bolts, and scrolls/tomes. You may also pick up and use any quest-related items, and any gold you find. You may NOT pick up any other items, not even to sell them. If you accidentally pick up an item, you aren’t disqualified—just drop it when you realize the error.
I stand corrected! purplelocust is correct. You can do whatever you want with Wirt's Leg. Enjoy!
Though it's worth mentioning that there isn't quite an *unlimited* supply of them. You can only pick them up while you're in act 1, or after you've killed Baal and want to run Cows. You can't go for legs while you're in act 2, 3, 4 or act 5 pre-Baal.
Two things: First, I forgot to mule off my gold AND mercenary items last character. Second, the character I received had a Manald Ring in their stash. Nothing really to be done, just a good reminder for people to not forget things.
I received Tennyson... looks terrific, which is a relief.