Priests are very easy to go after and keep controlled, so unlike druid/lock and pld/lock where you attempt to kill the pets/lock, here you just go after the priest and make him go oom from taking damage. They really don¡¯t have a way to keep your warrior off the priest, so as long as you keep him alive it shouldn¡¯t take to long before you run the priest oom. The only real danger here is having your warrior get low and then you get feared/spell-locked, and the warlock/priests nuking and finishing off your warrior. So, make sure your warrior is aware of his health and is quick to put up a shield/spell reflect/intervene if he sees himself get low, and you have to be aware if the priest is dispelling your hots when you try to heal him to see whether you should rejuv/lifebloom or lifebloom spam.
The warlock will be doing one of 2 different things, either DPSing your warrior or draining you. If he is on you, just pillar hump him so he can¡¯t land the drains while your warrior beats down on the priest. Make sure to pop out and hot whenever he gets to 60-80%, cycloning the warlock when you go to heal your warrior so you have time to hot him and get back to a pillar without getting drained. Eventually the priest will go oom (usually far before you), then you can just kill them for a win.
If he is nuking your warrior, it is your job to stay as far away from the warlock as possible while healing your warrior. Stay at max range, because sometimes the warlocks will do a nuke on your warrior, then proceed to walk over to you and get a drain off because you¡¯re out in the open healing. So, keep a very, very close eye on the warlock and watch when he trys to go towards you, and run away while hotting the warrior. The warlock will be feeding your warrior rage when hes nuking, so while you¡¯re spending more mana to heal the warrior, the priest is using much more to keep himself alive. The match will be shorter, but you should still force their priest oom faster than you do, and then you get your victory.
Well, that about covers it. Any other combo you should be able to figure out, but if you have trouble with a certain combo that I havn't written down, you can ask here or on my Server.
The ultimate idea is to learn something new every match. Every time you lose (or win), analyze what happened. Whenever we lose, we look for a lesson to learn about what happened, why we lost. If we can learn a lesson on how to play a matchup for 30 points, it's a trade i'll make every time. So, Best of luck, have fun, and make sure to cyclone a paladin!
Again, Pwyff (2300+ Uber Druid of handsomeness) wrote his own writeup on the druid/war 2v2s, so if you have any more questions or would like more tips, Go read his blog! Not only does he have awesome advice, but his reads are quite enjoyable. You may find that his playstyle also works better for you than mine, so go read his writeups!