Dragon City Ruins

When it enters, create a black 1/1 skeleton token
with Regenerate: {b}.

{t}: add {c}{c} to your mana pool.
{t}: return one of your creatures to your hand,
then Venture into a Dungeon.

Season five ended with the evil group hunting Erebor
in Dragon City, but then having Bender and Rhone
turn on each other over "their women."