Originally Posted by KuroNeko
You can find the fun stuff in the AI map.
-wtf and LoD will be added to DotA2 in the future. You could probably suggest fun mode, too. Maybe. Or maybe not. Well it's an idea. Until then, go mess around with the AI map. It really is pretty fun to delve into DotA's long lost past.
Well, anyway, not really.
Currently most of the outdated or old abilities and heroes have been removed, or at least aren't easily findable.
Some stuff like Ignis Fatuus are still there and newer replaced abilities.
Death Ward probably got reused by Witch Doctor.
Forest Sentinel is still there.
I don't bother checking the pre 6.00 stuff, but the -fun command was never used for those heroes in the original DotA versions; the enabled heroes by that command were old Invoker and Techies, afaik. The AI versions were the only ones to reuse the old Heroes.
You can check that stuff yourself by downloading the provided Data Dump. My pro CTRL + F skills didn't yield many positive results.