In this strategic analysis, you learn how to steal baron from the enemy whilst acing their team.

To start off with, all players must have Flash and you must hold the top base. You can reverse this to work with dragon if you so wish.

Once baron pops up, start placing wards on it and near it (this allows you to get in position) to keep watch. Once you see the enemy players heading for baron, get four of your team to go over to the half-semicircle which is on your base side.
Hide in the bush to prevent wards or Clairvoyance from marking your position
The other person on your team will go around behind and prevent players from escaping.
Make sure he is the player with the most cc, else you're wasting your time
Once the baron has only one third of its health left, get your teammates to all Flash in and proceed to dominate the surprised team. Send three of your teammates to finish off any runners, and have your last champion defeat the baron (it should be on the verge of death from your attack).
Keep your DPS behind, it will kill baron the fastest and the tank is needed at the enemy base
Now use your advantage and attack the enemy's base. Your tank is in position from the chase to take the turrets fire. Take out as many turrets and inhibitors as possible before they start spawning, then run and B to spend your gold.
You should also have your DPS that killed the baron go and steal the enemy's blue and red (grab dragon if it's there too)