because Laxus is an ally, different from those who are against it. She lost her power after Aldoron awoke. Irene was not even taking the fight seriously seeing as how she could effortlessly enchant herself into Wendy right after finding out she is a perfect vessel. building is nothing to someone who can compress a large country, plus the will of Viernes is like that of Irene in Wendy’s body and vice versa, it all depends on magic power, and Alchemists were defeated which shows they are weaker than Wendy and since power is not part of their bodies that limit is not applicable. Selene is weaker than Irene as established in the shot above with how Enchantments work and is stronger than Wendy that would threaten her While attached to her against her will, another point for MP matter in stats, and Wendy’s potential can defeat someone like Haku who scales to Suzaku. How would any spell work to spot someone who is not only stronger and is a persona if it was for malicious intent? If she could affect someone stronger than her, why didn’t she sent Ignia to Edolas where he would lose his magic too? Or any other DG for that matter? combat or not it establishes the power difference based on ability to affect their target. Only because she had no magic power that it killed her. And because that person would die and take her with them, that is the point. Sure if he uses SFs which is his pinnacle power, Zeref let him do that as to show Natsu’s futility. Nienhart was a little power drunk at that point and Brandish could affect Natsu who was ready to fight her, Jacob was flown backwards and Natsu took advantage of that and still had enough strength to get away. Only because Zeref let him as to show how pointless it it. Not with DF, but then again he did not used it on them and base Zeref can push DF Natsu back. Invel can freeze FDK flames effortlessly and standard Spriggans scale to him. If DF was that powerful he would has powered through like you claim. Aldoron was weakened and Gajeel Who was powered by a Spriggan can stagger Aldoron’s weakened form, DF Natsu is still below that of Base Zeref who can damage and eventually kill Aldoron who is much stronger than what Natsu fought.