Immortality In Open World: Infinite Rez (Requires Confederate) (Patreon)
Content
Blizzard's implementation of the new cross-faction system allows players to join a cross-faction group (eg one horde, one alliance) through the social panel.
These groups are not supposed to be able to interact in-world but there are certain exceptions Blizzard have neglected.
Blizzard have somehow allowed a Horde player to resurrect an alliance player. This means that with a partner, or a second account character, you can resurrect an opposite faction player in Orgrimmar, Stormwind or anywhere indefinitely, effectively making them immortal outside of instances.
This is gamebreaking for world pvp. It can also be used for economic sabotage, for example by preventing the use of the auction house. This can be used to restrict the supply of items to the auction house and manipulate markets.