853866 Accessory Set 2019 a LEGO Ninjago: Masters of Spinjitzu set released in January 2019. Despite being released alongside the Legacy sets, the accessory pack actually ties into Season 10.
Official Description
Gear up for battle with the LEGO® NINJAGO® 853866 Accessory Set 2019, featuring the Oni villains from Series 10 of the NINJAGO Masters of Spinjitzu TV series. This action-packed little set has 3 new-for-January-2019 Oni minifigures, including one with iconic horn elements, and assorted weapons.
- Features 3 Oni demon minifigures—one with horn elements—with 4 swords and other assorted weapons.
Trivia
- Unlike previous Ninjago sets, this is the first time where a season's villains were solely released in an accessory pack.
- This is the only set featuring the Oni.
- This is the only set featuring the Omega, who leads the Oni.
- This is the only Season 10 set.