I would like to know what happens when a Vortex is used on a character with elemental or arcane protection buffs. Here is what I came up with for the buffs that defend against magic damage:
Resist Fire, Water, Earth, Wind - level 44 on SE, 66 on PP
Elemental Protection (fire, water, earth, wind) - level 76
Arcane Protection (dark, sacred) - level 77
Dance of Earth Guard (resist earth) - level 62
Dance of Aqua Guard (resist water) - level 70
Song of Invocation (dark resist) - level 43
Song of Flame Guard (fire resist) - level 60
Song of Storm Guard (wind resist) - level 70
The following boost Mdef and are not cancelled by surrenders:
Magic Barrier (Mdef) - +30%
Song of Warding (Mdef) - +30%
Chant of Victory (Mdef) - +20%
Prophecy of Water (Mdef) - +20%
Dark Vortex has a built-in surrender to dark (level 76). I am assuming that Dark Vortex will remove the Unholy Protection buff and Song of Invocation but that it would not remove Arcane Protection.
Wind Vortex is a level 77 skill so I would assume it will remove Resist Wind, Song of Storm Guard, and Elemental Protection buff since those are level 76 and lower skills.
So against a Wind Vortex it seems that the main defense will be Mdef buffs (+30%, +30% and +20% stacking for 2x Mdef) and Dark Vortex gets an additional penalty of 30% from Arcane Protection.
Can anyone comment on this? I dont' have access to the 76+ buffs or the songs/dances so I can't test. Also, does the Vortex actually remove the buff or is it just unaffected by it and is there only a chance of removing it or if it is higher level does it 100% remove it?