User blog comment:KnocknickKnock/Lucy's Unused Power!!!!!!!/@comment-24066070-20140713151818

I get a feeling your basing this theory of her having some insane potential/magic supply on the sole fact that she casted UM + Virgo appearing when she was supposedly drained of magic. That's simply wrong.

Many main chars have been drained of magic, only to wring out even more several seconds later. The Dragon Slayers in their battle against Faust and the FT members when confronting Precht are prime examples.

Bottom line is: main chars have plot benefits, be that plot armour, plot recovery or plot magic-resupply.

In this regard, Lucy is hardly any different from the other Team Natsu members. But saying she has an enormous amount of magical power is simply wrong, because it's just plot convenience.

As for the combo's, that's just wishful thinking on your behalf. You could make such a list about any char in the series: what would Natsu's Unison Raid with Gray look like? and the one with Juvia? and the one with Gildarts? and so on.