Which elemental blade do you think is best of the following 5: 1:Fire blade Can set on fire. 2:Earth blade Very light and unbreakable but not very damaging 3:Water blade: Can have part turned to water then formed back example you turn half into water and stick it through your enemy then you reform it take it out and kill them. 4: Wind blade Slice it in any direction and very strong wind will blow out. 5 Lightning blade A normal blade that is surrounded by Electricity.
Well, if ice was a choice I would pick that, but I would have to say electricity depending on how many amps are going through it because as little as 100-200mA are fatal, and as you are obviously biased towards water.