Blinking
MS is 0
blinks in a random interval (0.5 - 5sec?) the way it would normally have moved
fixed checkpoints would make special places too good?
Corrosive Skin
Lower HP
leaving a debuff on Towers at attack, reducing dmg done by x% for y sec.
Stacking a couple of times
Ghosts
Switching from ethereal to normal every couple of seconds.
cant be attacked in ethereal form, but take much more magic dmg (Burns, dots, special attacks)
when switching to normal they get no more magic dmg, but instead more normal dmg