[Autumn]

I wonder if Avalon having a From The Ashes once per battle style effect would make it good enough (or too good).

I'd say do it, but with the following changes:

1. Make Avalon capable of being enchanted on any type of equipment
2. Make the healing based on how many 'Avalon' items the user has equipped, via exponential increase.

I.e:
Once per Battle: If the user is Knocked Out, they automatically revive and regain HP based on how many 'Avalon' items are equipped:
1: 1% HP Recovered
2: 2% HP Recovered
3: 4% HP Recovered
4: 8% HP Recovered
5: 16% HP Recovered
6: 32% HP Recovered

Wouldn't that make everyone and their mother run it on their accessories (despite only being 2% HP) because accessories only really have lucky right now? Which is a PvE enchant only mind.

As neat as the idea is, it'd serve to make Avalon basically run on everyone, even if its only 2% HP it will simply just be slapped on anyone for a makeshift last chance.

Torso or Weapon enchant would be the way to go unless a boat load more accessory enchants are added to compete against this change, as Torsos, and especially weapons are the most widely diverse in enchant selection.