With this week’s build, Blizzard has added many new achievement rewards to Patch 10.1. These rewards include new toys, new pets, and the new Dragonflight Season 2 Master achievement mentioned in Patch 10.1 interviews.
The new Dragonflight Season 2 Master achievement rewards a tier “Omni token”, meaning it can be used to generate a tier piece of any slot for players that complete Keystone Master or reach Challenger II in Dragonflight Season 2.