It will not stack with any of the former Healing Amplification 10% items, which currently grant +20 exceptional bonus:
* Random loot: Lesser Convalescent
* Named items: Book of Amaunator, Momento of War, Vengeful Protector, Wall of Wood (level 15 and 16)
* Crafted items: Dragontouched Armor (Eldritch), Greensteel weapon (Tier 1)
http://ddowiki.com/page/Healing_Ampl...ion#Item_bonus
I'd rather farm remnants for BtA gear than dragontouched stuff (btc).