Splitting

This defensive strategic won't give you many BP, but it's the best to sink CS.
The idea consists in sending enough amounts of birs that can destroy all the LS that escort the CS.
Of course, if you know the enemy don't have many LS, then you can just stack birs and sink all his OLU, but when the attack firepower surpass yours, splitting is the best option.

Splitting is similar to snipinng, the main difference is that your precision is higher. because you only have to click one button:Support.

Sinking the CS:

• Identify the CS, cast wisdom and see how many LS the player has;
• If it's possible cast Sea Storm and negative spells;
• Go to the simulator and find out how many birs are enough to kill the LS;
• Don't forget to put the premius and the luck 30%(to the enemy).
• 11 sec before the CS arrives, send support as fast as you can. You can do this until 9 seconds after the attack;
• The more birs cities you have, the more attempts you have.

The standard number of LS is 39 for a "magical reason". Then groups of 70 birs can deal with the LSs.

Worst Scenario

In the second of the CS, there are LS nukes and OLU nukes, which means the CS was the last attack to be launched. This is never happend to me, but in this case sniping and stacking are the best options. Of course, most of the players you'll face won't know how to snipe or split.