April O'Neal, Hacktivist is #29, and certainly one of the first blue cards.
For comparison with two recent sets, DSK's Abhorrent Oculus is #42 and SPM's Amazing Acrobatics is #25.
Isn't "just" an artifact or gold heavy set, because DFT's Aether Syphon was #38 and SNC's All-Seeing Arbiter was...