train your Pokemon or trade strong ones
you just walk into the elite four again
At the Elite Four or battle NPCs with Pokemon the same level as your one.
go to the elite four, battle Lorelei and use thief on her Lapras and it will be holding it.
after catching deoxys go to elite four and battle them then the champion should be ur dad worked for me
After beating the elite four and getting the national dex.
get her in icefall cave
you can't battle any of the gym leaders anymore.
Yes, but you have to beat the Elite Four to battle it a second time.
At the Elite Four or battle NPCs with Pokemon the same level as your one.
If you defeat the Elite Four Twice, you will have the opportunity to battle the Champion, Alder. He has mostly Level 72 to Level 75 Pokemon.
go to the elite four, battle Lorelei and use thief on her Lapras and it will be holding it.
No its not an HM in leafgreen.
after catching deoxys go to elite four and battle them then the champion should be ur dad worked for me
After beating the elite four and getting the national dex.
He is the Elite Four Champion. You battle him in the Elite Four.
Nope.
no you can only battle the jhoto elite four
You don't need to defeat the elite four twice. Only do it if you want to!