after many many solo missions (including the Circuit, where I really had no business being alive as long as I was) I've come to the conclusion that Mag really is the Warframe who does Everything*
* (everything but spy and rescue missions, that is, because I have skill issues)
at low levels pull is basically a dirt cheap nuke, even on non-Corpus. and nothing, NOTHING survives the bubble + Cinta hyperfireblender. and if you can keep the energy flowing in (which isn't too hard with some mods and murdering enemies by the dozens) you just don't die because you can pulse your shields back up over and over. (also great for hijack missions!) and while I haven't been in a place to need it yet, her crush is supposed to be great as both a nuke and an opener on armored enemies
every bit of her kit has a different use, with some really fun interactions, and it just feels great to use
(fallen london stamps by