re: pokemon arceus
@Felthry Spiritomb is... Definitely a quest to obtain.
As for the ones you haven't seen, they might be rare spawns or they might only appear in space-time rifts.
re: pokemon arceus
@LexYeen several of them are baby pokemon--we don't have cleffa, pichu, or bonsly, but i'm not sure about the others
-F
re: pokemon arceus
@Felthry Oh yeah, those are all rare spawns.
Bonsly shows up in the same places as Sudowoodo, and I had one leap out of a rock formation in the Crimson Mirelands once. Wish I could remember where I found the Pichu I caught, and I don't remember if I have a Cleffa yet.
re: pokemon arceus
@LexYeen @Felthry I've finished my dex, so some more gentle hints follow.
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The general rule for the rare spawns is they interleave with their older counterparts. So if you look at where your dex says Pikachu or Clefairy are, they should spawn there after a few region reloads.
Although the locations can be weird or inconsistent (as in a corner of the named area), and I kind of do recommend breaking out a guide if you can't find them after a few tries.
re: pichu spawn info (pokemon arceus)
@Felthry @Goldkin And that's just how random odds work!
Glad you found it all the same!