Last night I tried to gank a lvl 89 warrior with my feral druid that is 5/8 contender's gear and carrying a 427 ilvl staff. The thing is that no matter how hard I tried to kill him, he wouldn't die, but instead my health was dropping. I know I didn't play very well, mostly because I thought it would be an easy kill, but seriously. How the hell can they regenerate so much hp? What has changed since Cata?