#OnThisDay in 1963 #ElementLad debuted in #AdventureComics #307 as #MysteryLad confiding #hisUniqueSuperPower only to #SaturnGirl accepted into #LegionOfSuperHeroes with her backing helps the team against #spacePirate #Roxxas reveals he’s #theLastSurvivorOfHisPeople with #ThePowerToTransmuteElements