In the current meta, the lich siege is a very efficient way to take down ANY defense for nothing. Even if your opponent is a huge whale, all you need is energy and revive pots. Now how does it work?
There are several variants to the lich siege so I will start by explaining you the most basic one.
Frontline full of silver marauders, backline silver acolytes and heroes. Why is it so strong? Firstly, undead troops don’t lose morale, are many, and they also don’t get affected by poison. Their only counter are zone damage troops, but gazul will anyways resurrect them once they get killed. Secondly, even if your skeletons die, they are extremely cheap and your acolytes will plunder ressources like crazy so you won’t suffer any losses. Moreover, their training time is very low so you can just use free rush to build them again and again. The most important and difficult part is to choose the heroes. You might need or not need some of them depending on your target.
I will tell you how to build