I liked that she used Irenes power
This battle was really boring, well I must say even if I like the Irene part, overall the battle was really lame. Motherglare doesn't use any special magic, she not even used her dragon form....why?
But I disagree with the other part, we had at least 6 battles which were good-okay.
1. The battle against Earthbuild: so far he has the best fight. Many strong people are part of the battle, it's one of the longer battles (4 chapters already) and the fight is not over yet. He showed us some cool spells.
2. The battle against Anchor: also one of the longer fights (5 chapters or so) and the fight is also not over yet. He used the most spells so far and few of them are cool.
3. Midnight vs Zero: sadly it was a short battle (2-3 chapters), but it was a real battle between mages and this was really nice.
4. Natsu vs Ignia vs Faris: also a battle that was cool.
5. Erza vs Wed Round 1: in the small town at the beginning of the Arc, the short battle between her and Wed was a nice battle.
6. Racer vs Bird: another short battle but it was nice too see someone like Racer in a battle again after many many years.
They are maybe not the best ones among the FT battles overall, but they still good-okay. I only wish Hiro would make them longer and show more spells in some battles.