User blog comment:SoulRise99/Chapter 526: August is the REAL child of Zeref and Mavis; as well as the WEAKEST Mage in Alvarez!?/@comment-29778526-20170315184454

I always believed that Irene was the strongest of the Spriggans, mostly due to her being a Dragon, but that doesn't mean that August is the weakest. He only can't copy holder-type magic, but his sheer magic power is enough to make simple spells into deadly ones to defeat his opponents.

I mean look at Dimaria with her magic pressure alone she had Kagura and others very disoriented, which means that August should be able to do the same only to a greater extend since his power is superior to Dimaria.