Sacred Haven of Debauchery

What copyrights, what trolls, what are you talking about? What does Blizzard have to do with it?

Well, here's a list of Dota characters from Blizzard games:
Rexxar, already mentioned - Warcraft
Cairne Bloodhoof - Warcraft
Furion - Warcraft
Alleria Windrunner - Warcraft
Thrall - Warcraft
Pudge Butcher - Diablo
King Leoric - Diablo
Anub'arak - Warcraft
Kel'thuzad - Warcraft
Vol'Jin - Warcraft
Kael - Warcraft
Eredar - Warcraft
And that's not counting Basher, Messer, Buriza, and Eaglehorn, also taken from Diablo. And there's also Lothar's Edge and Anduin Lothar. And the battle is between the Great Tree and the Guardians and the Frozen Throne and the Scourge.
No, transferring all of this isn't as simple as it seems. And I just remembered that Lancer is also from some part of FF, and Lina, already mentioned. And if you read the heroes' stories, FR will also come up...

Added 2 minutes ago
P.S. My favorite version of Dota is hardcore 6.27b, when the Aegis was still assembled, and Roshan had to be beaten by the whole team.

Added 36 seconds ago
P.S. My favorite version of Dota is hardcore 6.27b, when the Aegis was still assembled, and Roshan had to be beaten by the whole team at level 20-25.