Altering Cave

[Foamy]

I have an E-reader but do I need cards to get the pokemon from altering cave? Or is there another way?

 

[Rakurai]

Using the Mystery Gift feature would change the Pokemon in the cave, but I don't think there's any places you can still do that at, though.

 

[Wynaut?]

All of the Pokémon you can catch in the Altering Cave can be found on Emerald anyway... Like Shuckle, Mareep, Pineco, Teddiursa and Aipom.

 

[Foamy]

To bad I don't have emerald, and hey are my favourite Johto Pokemon aswell!

 

[DarkSpectrum]

I have an E-reader but do I need cards to get the pokemon from altering cave? Or is there another way?

There are no e-reader cards to change altering cave....
Nothing can change altering cave, it's one of those things they never added a way to change the stuff around.

From the FAQ:
http://www.serebiiforums.com/showthread.php?t=92366

3. Q: What does Altering Cave do? All I find is Zubat!

A: The speculation was that we would be able to change the Pokemon in Altering Cave through Wonderspots. These are machines that you use Mystery Gift with, and they've been used at Pokemon Rocks America and the Pokemon Center in NYC to give out the Tickets for Deoxys and Lugia/Ho-oh. Unfortunately, there have been no Wonderspots for Altering Cave (in Japan or elsewhere), so it's basically a feature that they probably had every intention of doing something cool with, but just never did for whatever reason. The Altering Cave Pokemon can be obtained in Emerald, Colosseum, and now in Pokemon: XD.

(For the record, the rumor was that Japan had e-cards to change Altering Cave Pokemon, but someone living in Japan informed me that this wasn't true--they didn't have access to the Pokemon, either. They also translated the Japanese Pokemon website, and there's no mention of Altering Cave e-cards along with the others. Whoops. x_X)