With inverted 31's and other unlucky omens
13: “Inverted 31” = thirteen, an unlucky number.
El-P also purposefully skips the line where he would start with 13, the same way some hotel elevators skip the 13th floor. Since he skipped this line, for him to still end on 16 he had to start with number two, which is what he, of course, did. (his second line begins with three, so he started the verse where two would be)
This might be a reach but he might even be making the contrast with the 12 jurors who are supposed to go use reason, and come back with some superstitious bull shit. It is enough to make anyone need a 7&7.
To help improve the meaning of these lyrics, visit "The Last Huzzah (Remix)" by Mr. Muthafuckin eXquire (Ft. Danny Brown, Das Racist, Despot & El-P) Lyrics and leave a comment on the lyrics box