Power of the Tributed When you sucessfully Tributed Summon "The Winged of Ra", its ATK will becomes the sum of the ATK of the Tirbuted Monsters, and its DEF will becomes the sum of the Tributed Monsters.
Why would you use Union Attack + Vassal instead of Gift of the Martyr and Piranha Army? You only need one GotM rather than 2 union or 1 + spell reclamation? I get that PA wasn't available for a while but neither was US. Other than for the effect damage mission, it makes no sense to me