EARTH UNDER SIEGE: NEMESIS EXPANSION Usurp the Shadow Throne Basil’s Cathedral and compete to Basil’s Cathedral and compete to make the most memorable contribution and win the favor of the Tsar UNIQUE TURTLE POWERS: Utilize mystical energy to supercharge the Turtles' attacks and flip equipment cards to their Ultimate versions for enhanced combat traits the Nemesis Expansion adds new tactical challenges and progression options while remaining fully compatible with the core game transforming the game into a boss focused campaign where Operatives face a series of increasingly challenging encounters against powerful enemies