Diablo 3 - How to obtain the Royal Calf pet - The Darkening of Tristram anniversary event

This video shows me doing the steps to obtain the Royal Calf pet during the Darkening of Tristram anniversary event. You must retrieve the rotten mushroom from level 9 of the Diablo 1 levels first before you can use the cauldron in Old Tristram! Here are the steps: 1. Retrieve rotten mushroom from ninth level. 2. Use cauldron in Old Tristram to get Witch's Brew. 3. Use Witch's Brew to revive NPCs and pick up the items each drop to revive the next (first Farnam, then Ogden, then Pepin). 4. Revive Griswold to receive Wirt's Leg crafting plans. 5. Craft Wirt's Leg at blacksmith in town (under maces). It costs 1 million gold. 6. Salvage Wirt's Leg to get the Star Map. 7. Revive the cows in order at Old Tristram (middle, left, right). 8. Enter the portal to the farmstead and open the chest