But you can also use this expansion to enjoy using your Sword & Sorcery Heroes and Enemies using 3 bonus playing modes:

Lords of Endless Pain, where you find out how long can you hold your ground against an infinite horde of blood-thirsty enemies.
Kings of the Pit, where your challenge is to conquer the sacred altars and defend them.
Clash of the Heroes, where for the first time Heroes can fight against each other in duel - one vs. one, alone with a mercenary at youir side, or team vs. team.
This boxed-set expansion has a cost of $ 30 (future estimated MSRP $40) and it includes:

Nemean Lion, in two different versions - a red Enemy and a Master enemy;
Cerberus, the infernal creature from the world of Black Rose Wars, also in two different versions - a red Enemy or a Master enemy;
15 new Cards - Events, Traps, Treasures.
12 new Map tiles to build the legendary Arena of Talon, in a "day" and "night" version, including the 4 corner "gladiators' pits," creating different setups for different challenges. The tiles are compatible with normal S&S tiles to create custom missions.
6 double-sided Trap overlays, to create 12 different lethal effects in the arena - whirling blades, fire pits, ice traps, sharp spears, and more!
Myths of the Arena can be played in the Ancient Chronicles campaign, but it is also completely compatible with Immortal Souls, and can be played in that campaign as well.