You cant combo that well, but its a cheaper creature and it lets you play three colors, which is huge for EDH
Giving a creature flying that has no way to give itself flying is a really fun way to design that condition
Illustrated by Darius Zablockis Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Not Legal Brawl Not Legal Legacy Legal Comp
I'd be remiss if I did not mention the fact that Pack Rat is a rare in Return to Ravnica, and the remainder of the set is fantastic as a multicolor set, so snapping this up in Chaos is a solid gameplan
While your U/W Control opponent may plan to win with the two copies of Elspeth, Suns Champion in their deck, trying to beat that plan by loading up on Heros Downfall and Dreadbore isnt going to be successful
Even details like the frames of cards help drive home some of this shift in perspective