Both the "this card's name and original ATK become that monster's name and current ATK, and this card's effect becomes that monster's original effect" effect that is applied to this card and the "that monster's ATK becomes 0 and its effects are negated." effect that is applied to the opponent's monster, last until the End Phase in which this effect was activated. (They all stop applying at the same time during the End Phase).[1]
A: The effect of "Number 8: Heraldic King Genom-Heritage" can be activated by targeting an Xyz Monster that has been affected by the "it is unaffected by other card effects." effect of "Divine Dragon Knight Felgrand". If you do, the "this card's name and original ATK become that monster's name and current ATK, and this card's effect becomes that monster's original effect" effect is applied, but the "that monster's ATK becomes 0 and its effects are negated." effect is not applied.[5]
Q: During the turn "Legendary Knight Hermos" is Special Summoned, if I activate its effect and gain the name/effects of another "Legendary Knight Hermos", can I apply the gained effects?