To find this mob in-game, use BACKSPACE to open the World Search window, then enter Tracy in the Search field and click "Search". Remember, the field is case-sensitive and must be entered exactly as shown.
This mob is a member of the group collectively known as Karzak Barbarians.
See Health Potions and Mana Potions for a complete table of all such potions. Each merchant sells only 2-6 of each, appropriate for the level range of the zone they are in.