There are currently 17 such monsters: "Adventurer Token", "Alexandrite Dragon", "Alligator Token", "Bellcat Token", "Gene-Warped Warwolf", "Gunkan Suship Shari", "Jongleur-Ghoul Illusionist", "Leotron", "Lunalight Token", "Megalosmasher X", "Mekk-Knight Avram", "Mystery Shell Dragon", "Phantom Gryphon", "Photon Token", "Security Token", "Shiny Black "C" Squadder", "Zombino"
As long as youve got a good mix of permanents and the ability to draw cards, then youve got the ability to not only flood the board with strong Creatures, but also put stuff into play
It takes care of problem floodgates and forces the opponent to activate all their cards before they lose it to Harpie's Feather Duster
Forsaken City really good at paying for Stasis