User blog comment:FairyRaven/Fairy Tail Chapter 329: Seven Dragons, Review and Commentary/@comment-88.80.242.78-20130430103359/@comment-7418318-20130430151752

And even if she is theoretically still able to use it, I doubt she's want to, since she finally noticed that she want's to live and summoning Angels shortens the lifespan.

Though she might still have some of her silver keys... however usefull they might be against Dragons and Demons.

As unlikely as it is, it would be really awsome if Angel, Lucy and Yukino would cast Urano Metria together!