Combo all classes

Blade Master

Cyclone + Death Stab + Twisting Slash (the sequence of skills is not important)

Grand Master

Lightning + Inferno + Ice Storm (the sequence of skills is not important)

High Elf

Multishot + Starfall + Ice Arrow (the sequence of skills is not important)

Duel Master

Flame Strick + Twisting Slash + Power Slash  (the sequence of skills is not important)
Ice + Aqua Beam + Gigantic Storm (the sequence of skills is not important)

Lord Emperor

Fire Scream + Fire burst + Chaotic (the sequence of skills is not important)