Recently picked up two of the adored ones (common & rare) - the third light set and the first one with a perk, where all the lasses are African tribal designs. You really need to get them re-worked.
The ONLY way you can reliably trigger their ability is to first play the rare card from the children of the sun set as this places 3 healing gems on the board, otherwise you're hoping that the rare card from the ladies of the sea set places healing gems on the board.
The simplest switch would make the Rare, Epic & Legendary cards a clone of the Tamelesses set whereby X gems adjacent to the light gems become light gems to generate damage. Keeping the mythic as is would provide variety. The set perk could be switched to -80% dark gem damage as that is the only damage type that doesn't have a damage penalty against it.