User blog comment:Lord Zeref Dragneel/Top 25 most powerful characters/@comment-31.132.65.53-20150810095331/@comment-31.132.65.53-20150810201209

^up Someone has trouble keeping up. I never said Ultear can negate everything regardless of its mass or quantity. Also Ultear can't use her magic on things made of flesh and blood, and she must be aware of the thing she wants to use her time magic against. Her magic has weaknesses.

Whatever people may say, for me Ultear is one of the greatest mages and the only person in the whole story with magic able to affect the whole planet, even if most didn't realize it. After the time skip she even shown to improve her Time Arc that it can to some degree affect humans. But because the author never gave her a proper all out fight many people downplay her. Which is just sad.