While much of her remains unknown, it's crystal clear that she now faithfully serves Elesh Norn, the Mother of Machines
While there isn't much going on in the background, the focus of the card's art is on the ship and the dark details make this ship both intimidating and a beautiful work of art
In that sense, it reminds me a lot of Metastatic Evangel, another ridiculously powerful counter-generation engine at two mana
For those unfamiliar, the term aggro is short for aggressive, and in this case, refers to a strategy that seeks to put lots of low-cost cards into play and gain enough of an advantage to win before the opponent can stabilize
You can force them to use their mana in their turn
It basically converts damage dealt by Spiders into increments of at least eight, which doesn't equate to winning the game on the spot