Very Powerful Cross-Realm Method - Instantly Respawn Rares, Nodes, Treasures etc (Patreon)
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In retail world of warcraft the ability to switch realms is very useful as it effectively allows you to instantly respawn nodes/treasures/mobs/rares instantly.
There is a way to do this and while it has been technically possible for some time I have never seen a method to cross realms written down. The following method may not even be an exploit but it is very useful.
(You can ignore this bit and go straight to the instrcutions but it does help understand how the following technique works)
First it is important to understand that most legacy content is just one realm. When you are leveling up a character you will see multiple players from different realms. Blizzard do this to give the impression there are lots of players leveling up and to avoid the impression the game is deserted.
Within this cross-realm are sub-realms for war mode and war mode off, as well as timewalking mode. But that aside everyone is basically leveling up on the same realm.
Role-play realms are an exception to this. Role-players do not like players from other realms ruining their specific experience and successfully petitioned Blizzard to keep their realms isolated.
Instructions For Cross-Realm Transfer
1. Create characters on multiple role-play realms. These can be free starter edition accounts.
2. Take the character you want to level/farm with to a given zone. This character should ideally be on a non role-play zone.
3. Move a free starter edition account character to somewhere you want to farm.
4. Move the leveling/farming character to an adjacent zone.
5. Have the free starter edition character invite the leveling/farming character to a group.
6. (This is important) The leveling/farming character should now pass into the zone where the free starter edition account character is located.
(It is the act of passing into the zone which changes the realm of the leveling /farming character.)
I developed this technique mainly so I could change realms and farm rares very fast for experience.