[Chaos]

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