Have all of the conversations with the spirit of the Wizard's special character in the Pandemonium Fortress. Begin at Act 5.8 (Angel of Death), waypoint to the Pandemonium Fortress, speak with Tyrael to advance the quest, and simply continue on.
On Pandemonium Fortress Level 1: 0:00 - Recognition - automatic, simply walk down the stairs. 0:18 - Angel of Death - automatic, simply approach Isendra, though you can speak with Isendra to have the conversation again. 1:07 - Defeating Malthael - speak with Isendra. 1:27 - Spirits - speak with Isendra. 1:53 - The Past - speak with Isendra.
Make your way to Pandemonium Fortress Level 2, defeat Seraziel, break the Soul Prison Chain, and you can then have the remaining conversations: 2:26 - The Power of Death - automatically starts upon breaking the Soul Prison Chain, though you can speak with Isendra to have the conversation again. 3:09 - Isendra's Death - speak with Isendra. 3:42 - Death - speak with Isendra. 4:30 - The End of Death - speak with Isendra.
Appears on these pages
Isendra was a Sorceress, notably one of a group of heroes who defeated the Prime Evils. Isendra...