Hello I'm testing here and found out that if monster is casting a magic and you hide behind wall it finishes its casting and you get damaged. In fact once monster is casting magic and you hide behind a target its magic should be interrupted because it losts it's target here. Don't know why here is different. http://postimg.org/image/7td2cuo77/ and... http://postimg.org/image/i0z3dqdj9/ p.s. In Lineage 2 walls , trees and other obstacles has it's own meaning. Dagger classes can get in close range with attacking mages , Archers can harass Spell casters and etc. Sometimes it can even save your life.