I would say either fire or light (not ice)
if you go light SUPOPSEDLY (according ot Billion, look at one of his old entires, he even posted data) you do more damage be/c of the parry reduce. In addition, if you're going to be a blader, why would you go fire? You're AMAZING for tanking, that means you want as many mobs to come to you as possible. Light will attract them, and damage them, that way you can grind off of multiple mobs at the same time. Fire....is good for giants.....and you'll be getting light anyway since....you want to walk with decent speed
But I'd go light. I am a blader right now, and I'm actually raising light imbue for that reason....
It's book 2 lvl 1 now ^^, another 4K and it'll be my level
Tell me what you choose btw...