Talk:Riven/SkinsTrivia/@comment-4167645-20110911035606

Riven is one of six champions, the other five being GarenSquare.png Garen, KatarinaSquare.png Katarina, RenektonSquare.png Renekton, RumbleSquare.png Rumble and TryndamereSquare.png Tryndamere, who are truly cooldown based; none of her abilities have a cost, either in health, mana, or any other source.

Im pretty sure its to the contrary. Someone asked Phreak if she uses an alternative resource system, to which his only answer was "Stacking her passive is kind of a resource I guess?". Which indicates that thats the only resource utilization she uses, and she is still shackled by mana. Unless theres an updated message I didn't see.