Hey guys,
me (

) and some friends just started playing Shadowpriest Shaman Warrior (~2000 mmr). This far it works out pretty well for us. The games against wizcleaves are pretty open and we didn't face anything with two casters that seemed impossible to beat. But we're having trouble with beating:

+ Healer

+ Healer
As soon as both of them are able to connect to me my health just drops to 30% in like 3seconds. We're turteling the whole game while disarming, fearing, stunning both of the DD's but we always end up beeing stomped into the ground.
Do you have any tips for us, maybe also a general strat for playing

? (right now we're playing defensive, waiting for proccs and switch hard on Resto
Thanks for your help