I've been fooling around with this one for awhile:
Wall of Water
Characters (30):
4 Roy Harper <> Red Arrow, Coming of Age 4 Black Lightning, Energetic Hero 4 Hal Jordan, Founding Member 4 Batman, Founding Member 4 Aquaman, Founding Member 4 Superman, Metropolis Marvel 3 Martian Manhunter, Founding Member 1 Superman, Founding Member 1 Wonder Woman, Founding Member 1 Martian Manhunter, The Last Martian
Plot Twists (15):
4 Mightiest Heroes 4 Straight to the Grave 4 New Era 1 Indestructible 1 Intangible 1 The Stamford Incident
Locations (15):
3 Poseidonis 3 Unstable Ground 1 Construction Site 1 Batcomputer, Criminal Database 1 Research Facility 1 The Watchtower 1 Alias Investigations 1 Asgard 1 Stryker's Island 1 Espionage, Non-Unique 1 Coast City
There are two main combos:
1. Unstable Ground x2 + Poseidonis + Construction Site
Use Poseidonis to stack an Unstable Ground, and CS the one in your row to put the stacked one into your row...4 damage a turn.
2. STTG + Poseidonis + Alias Investigations
Use STTG to get any card you want, stack it then rally for it.