I'm new to this...
My eyes/brain/small and large motor controll are telling me SLEEEEEEEEEEPPPP
My hands and ADD are telling me TTTTYYYPPPEEE BLLLOOGGGGG
WHHYYY??!!

Sons of discord is a continuation of the first 2 episodes of season 2. It takes place around season 3.
Sons of discord also has many references to Greek mythology.
Eris is the Greek goddess of Discord
She once through an apple into a wedding, marked "For the fairest" All of the Godess'es fought over it. This is the mythical start of the Trojan War.