I second:
- focus fire : a must, all teamates focus on one target; call it out before the enagement really begins. I also find that if you have one person calling out targets it helps avoid confusion with lack of vent
- Focus on targets that are a)squishy, b)have no easy exit plan
- If things aren't working out... retreat, regroup, go again. Only commit if you know you can win!
Add:
- Similar to above, try and do everything you can BEFORE the battle to gain an advantage... if that's making them use up mana, then do it (dance and get spit on a bit, take a fireball or two, etc...). If you can hit them a bit so they take dmg first, do that too. Always try to stack the engagement in your favour... if you can get them to fight near your tower, do it.... any little advantage can make the difference.
- Don't be afraid to run early, but COMMUNICATE IT TO YOUR TEAM. I like to put 'b' or 'back' in chat so that others know I'm retreating... nothing loses a 2v2 or 3v3 like someone on your team making it a 1v2 or a 2v3 wihtout letting everyone know.
- Also, let ppl know when you're oom or need a heal or are calling for a snipe... general coordination stuff, but its important.
Cheers,
ThanatosESC.
P.S. keep in mind I'm by no means a great player, but the times that I've had success in those 'group battles' the above things come together nicely.