Someone said that dragonhide master spell lasts for 99 seconds with the dual casting perk, due to a glitch? Can anyone confirm this?

I think 30 seconds, or 45 with the perk, just isn't long enough.

Dual casting ebonyflesh with the perk increases duration by 50%, will give you ~3 mins of ebonyflesh IIRC. With 100 armor rating, 300 with the perk and no armor. Not to bad, so 300, or 350 with the lord stone when not wearing armor.

Also I've seen two versions of the archmage robes, one with and one without a hood, the one with the hood has +50 magicka as well. Which one do you get at the end of the mage guild?

Starting again as a sneak mage (after patch 1.3) and any answers would be appreciated.

The one with the hood.

That svcks, I would rather enchant my own hood.

Does anyone know about the alteration master spell?

Dragonskin, takes a good 5 seconds to cast and you can't move while channeling it. But it gives you 80% damage reduction for 30 seconds without the perk, 45 with it. Can be duel casted so it'll last for 99 seconds, cost alot of magic though

Yeah I'm fine with the cost, I will get the master perk and some reduction enchantments. I'll be invisible when I cast it then pounce out to attack everyone ha.

Master spells aren't affected by dual casting normally, can you confirm it does affect the dragonskin spell? If it does then thats good enough for me, I will get the fighting done in 99 seconds.