At will this angel can Cure Serious Wounds, Cure Disease, Remove Curse, Part Water, Find the Path, create a Wall of Fire, Ice, Stone, Iron or Fog, Blade Barrier, Wind Walk, Mass Teleport (up to 10’ radius), and Continual Light, 15‘r.
Want to just port these over as SLAs? If so, maybe we should switch part water to an Su (or drop it if these already have enough). Would continual light be light or continual flame?
Per the conversion guide, continual light = daylight.
How about this?
Spell-Like Abilities: At will—cure serious wounds, daylight, greater teleport, remove curse, remove disease, wall of fire, wall of ice, wall of stone; 3/day—blade barrier, wind walk; 1/day—x. Caster level 14th. The save DCs are Charisma-based.
I don't think we really need part water, as it can simply greater teleport stranded victims across the water.
Also, rather than give it a merciful weapon, how about this?
Mercy (Su): An angel of mercy may choose to deal nonlethal damage with any of its natural attacks, weapon attacks, spells, or spell-like abilities at no penalty or increase in spell level or casting time.
We should probably also add discern lies and maybe detect thoughts so it can know for fact that someone who repents intends to make good on their claims.
Skills: 13 at 17 ranks
Concentration, Diplomacy, Heal, Hide, Intimidate, Knowledge (religion), Knowledge (the planes), Listen, Move Silently, Sense Motive, Spellcraft, Spot, Use Magic Device?
Feats: 5
Probably some metamagic due to the good spellcasting?
Shall we work on the spell list (keeping in mind Extend Spell)?
Spells: Angels of mercy can cast divine spells as 14th-level clerics. An angel of mercy has access to two of the following domains: Air, Destruction, Good, Law, or War (plus any others from its deity). The save DCs are Wisdom-based.
Typical Cleric Spells Prepared (6/7/7/5/5/4/4/2; save DC 16 + spell level): 0—x; 1st—x; 2nd—x; 3rd—x; 4th—x; 5th—x; 6th—x; 7th—x.
*Domain spell. Domains: Destruction and Good.
Edit: Perhaps we should change those domains to include Protection and Travel?