Buying this service will get you the incredibly prestigious Inferno Armoredon mount by achieving the Dragonflight Keystone Master: Season Two feat of Strength achievement. In order to get it, you shall get Mythic+ Rating of 2000+ while finishing +19-20 mythic dungeons within the time limit.
Keystone Master is a seasonal achievement, meaning that you are only able to receive during the current season. When the season ends the achievement is retired and the mount awarded for it becomes exclusive to people to managed to complete this “feat of strength”.
The Inferno Armoredon is a account-bound mount, meaning all your characters will be able to use it, once you have unlocked it.
ETA: 1-4 days
Rewards:
