The Shadow and Steel Expansion adds 12 agents and 4 tyrants to the base game.
The agents have two categories: Shardhunter and Schemer. Each player controls one of each type during the game, selected at the draft. Every agent has a unique active and passive ability, for a wider range of possibilities.
Shardhunters move across the wilderness, gaining extra abilities based on the quests they complete.
Schemers help the player to dominate the Havens, they also have extra abilities.
Tyrants add unique opponents to solo play. Each has 3 levels to fine-tune the difficulty. By including them and the agents you can play through a gradually more challenging solo campaign of 12 missions. This campaign is further supported by event cards, which can even be used in multiplayer, breaking the basic rules, creating interesting situations, and increasing replayability.