50002144 Ninjago Battle Pack, also known as Dareth vs. Nindroid, is a LEGO Ninjago: Masters of Spinjitzu polybag set. It was released around September to December 2014, depending on location, and includes Dareth and a Nindroid Warrior, as well as a "fake" trophy and a silver sai.
The set was also a Toys "R" Us exclusive.
ToysRUs.com Description
Grand Sensei Dareth takes on an evil Nindroid in this cool Ninjago Masters of Spinjitsu playset featuring 2 minifigures and a cup for the champion! Recreate favorite moments from the Ninjago Masters of Spinjitsu TV series with this awesome LEGO minifigure set!
Trivia
- This was the first set to include Dareth.