Lets break this down:
Washington gets: St. Louis's 2nd over all pick this year
St. Louis gets: Washington's Next 3 1st round picks, and a 2nd rounder.
Got it. Nothing to see here, just Daniel Snyder being Daniel Snyder.
EDIT: And with the 1st and 2nd overall picks in the 2013 NFL Draft, the St. Louis Rams select.