Power Girl (2009-) #19
This storyline is definitely a case of “writing for the trades”. It is a good story to binge read like this, but the books go by real fast and don’t by themselves accomplish much. Back before trades became a thing they could have covered this storyline to this point in like 2 issues maybe 3. But reading it like this has been fun, a big fan of the old JLI era Justice League so loving all the tie-ins and call backs.