This emote named Sparky Electro Heart is going to be available to unlock in the challenge.
Sparky heats up his coils and shoots an electric heart into the air.
You can Unlock this at the Capture the Sparky challenge.
This emote is not exclusive means you can get it later from the shop. This emote might appear first for some real money offer and later on offered with gems.
You can get this later at a cost of 250 gems.