1 MILLION RARE CANDY
you have to have the swim cabability. first put a rare candy as your SIXTH item. then fly to Veridian. Then talk to the guy that teaches you how to catch a pokemon and listen to what he has to say. then right after he finishes fly to cinnabar island, walk to the right side of the island and swim up and down the side not going all the way down. after a while MISSINGNO. should appear. he could be in between the levels 0 and 142. so make sure your pokemon are strong.you can catch it but it will gradually release the pokemon that you have captured. if you catch a level 0 you can give it a rare candy and it will evolve into a level 1 Kanguskan. also when you are swimming up and down watch out for the gardian pokemon because they are very strong.
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