Best base item to use for Breath of the Dying?

Hello,

I'm trying to create my own, but I want to make sure the weapon I use is actually compatible with creating the runeword. Does anyone have any advice or suggestions on what Ethereal 2h sword works? ( I know it's not the best weapon over an

Axe, but I prefer it.)

An

Eth

Colossus Blade would be a good option. That is generally the popular choice for two hand swords made into the Breath of the Dying runeword.