When I first saw the classes set bonuses I got quite interested in it.
But I think this wasthe best part of all!
Item - Shaman T10 Elemental 4P Bonus - The cooldown on your Lava Burst ability is reduced by 15 sec. (15 sec) . So I then we can use lavaburst all time^^. (fuck off lightning bolt).
But I guess it's 1,5 sec.
Using 4 pieces of T10 in pvp and spam lavaburst + bloodlust would be quite OP ;D