Advice on White Dragon Tooth

[duneadx]

Hello-
I recently came into possession of a "White Dragon Tooth" which allows you to right click and summon a lvl 49 necro pet, 1 charge, no level restrictions. I was wondering if anyone has had previous experiences with where they used theirs, methods they used while the pet was active, or basically just any advice they can give to a player who is contemplating where/how to use theirs. I intend on starting a brand new character, either druid or shaman for this. Any advice or tips would be GREATLY appreciated. Thank You