hacks

https://projectpokemon.org/home/forums/topic/18918-pokemon-soul-silver-event-and-wonder-card-pokemon-action-replay-codes/

https://www.serebii.net/platinum/wifievents.shtml

https://www.serebii.net/heartgoldsoulsilver/wifievents.shtml

https://www.supercheats.com/nintendods/pokemon-soul-silver/10307/ar-codes/event-lvl100-arceus/

https://gamefaqs.gamespot.com/ds/960100-pokemon-soulsilver-version/answers/194106-action-replay-code-for-event-celebi

https://gamefaqs.gamespot.com/boards/960099-pokemon-heartgold-version/66314797

http://cobra-romsds.weebly.com/pokemon-soulsilver-action-replay-codes.html

https://www.supercheats.com/nintendods/pokemon-soul-silver/1785/ar-codes/wild-pokemon-are-shiny/

From starters, to events and even legendary pokemon. makes everything shiny
621d1584 00000000
0206defc 47004800
0206df00 02000001
e2000000 0000003c
6800480d 490b6840
88011808 9c0d8842
40510c24 20074061
04244041 940d430c
21001c28 f06eaa0d
4801fea3 46c04700
0206df05 000000dc
021d1584 00000000
d2000000 00000000