Copy-pastes are allowed only under certain conditions:
• The resource must be owned by Blizzard Entertainment. Can be from any of their games (Diablo, Warcraft, etc..)
• The copied resource is properly credited.
• The copied resource is considered really useful.
• The copied resource has been edited enough to be considered approvable. (Optional)
When all those conditions have been met, your copy-pasted resource may get approved and moved under the Blizzard Entertainment user profile.