Tanking as a sin

One thing I hope you realize is that with only Shadow Form and no recharge-time modifiers, even with 16 Shadow Arts and an enchanting weapon, you will only be able to maintain it for 26.4 seconds consecutively.

For armor, blessed armor is always a plus, an extra 10 armor is always helpful since it looks like you'll always be enchanted.

As for weapons, I would suggest a 1-handed weapon (spear preferably, axes & swords work as well) with an `of enchanting` suffix and an "I have the power!" inscription. A shield to go with your weapon allows you 8 armor, even without meeting the requirement, and either a -2 damage while enchanted or 10AL vs X-Damage-Type should suffice quite nicely. Yes I was aware, however I feel like IAU would be more useful then assassin's remedy(33% faster recharge skill?) Am I wrong?

I have an axe exactly of what you said and a shield with 10AL vs. earth damage from my vaet farming build, do you think that would be ok?