ok 1st of all this doesnt works on ALL server i tried on about 4 of them (on DragonNetwork now it's fixed

)
HOW DOES IT WORK:
1. equip full plate armor and full plat helmet
2.equip a NG,D or C grade set that doesnt need the helmet to work and REMEMBER TO KEEP UR FULL PLATE HELMET EQUIPPED
3.equip full plate armor
4.equip a NG,D or C grade set that doesnt need the helmet to work and REMEMBER TO KEEP UR FULL PLATE HELMET EQUIPPED
5.continue this way with number 2,3,4
6.equipe full plate armor
7.equip a B/A grade set (robE)
if u check ur passive skills u will see the bonus from other set but only the cast speed will stack and u will reach awesome cast...
tried on l2 dragon (fixed), l2fightback(doesnt know if is still online), l2premiere(doesnt know if still online)