Another Bard shrine QOL buff
http://imgur.com/ZeRA2E7
No reason to go into greater detail than that picture.
1 light when it's 1/3 of the way charged, 2 when it's 2/3, 3 when it's fully charged and gives a full heal.
I use to think this was the case when he was released, but the lights just glow in a circular pattern.