Plop !
Je te sors le ruling fraîchement trouvé :
"Even if "Harpie Lady" was declared by "Prohibition", "Harpie Queen" can be Normal Summoned. However, since "Harpie Queen" is treated as "Harpie Lady" by its own effect, the effect of "Prohibition" is applied. Therefore, "Harpie Queen" treated as "Harpie Lady" cannot declare an attack or change its battle position."
Donc en gros, tu peux la summon, étant donné que son effet est continuous, elle sera quand même considérée comme Harpie Lady, mais ne pourra ni attaquer ni changer de position, puisque c'est considéré comme une utilisation de la carte. Un ruling bien stupide quoi.