Massive spoilers, so if you haven't finished either the main story or episode 1 of the DLC, you may want to leave. Why was ur-Elizabeth even present at the infant edition of tug-of-war between Booker and Comstock? And didn't drowning all instances of Booker that accepted the Baptism at Wounded Knee erase all instances of Comstock from the multiverse? I know that this particular Comstock fled to an alternate reality after decapitating his sort-of daughter, but he shouldn't even exist in the first place. Also, the DLC needed moar wrench.