A Union Deck focuses on Summoning union monsters, equipping them to their host monsters and utilizing their effects. Some host monsters have the ability to summon their corresponding Union when summoned, thus making the process much easier. Union monsters, once combined, have abilities ranging from hand destruction, field control, and even beatdown, making this deck very adaptable to any particular threat. Union monsters also have a wide variety of special summoning, allowing them to swarm the field rather quickly.