The Adventurer's League (and its previous-edition predecessors) takes a step in the right direction: There you have costs and limits assigned to NPC spellcasting services. A low-level spell might cost the party 25 gold pieces, and there can only be three castings per day. By the way; do any of you know the formula behind the AL costs? Adventurers League Dungeon Master’s Guide. Acolyte Background. Characters with the Shelter of the Faithful background feature can request spellcasting services at a temple of their faith. Once per day they may receive. From the Spellcasting Services table for free (plus the cost of any material component needed). Factions are part of Adventure League not part of 5e. Yeah you are free to have factions in your game but the Adventure League factions exist for a specific purpose, namely organized play. There's an entire section in the DMG about factions.

Adventurers League

Spellcasting Services

• Cure wounds (1st level) 10 gp

• Identify 20 gp

• Lesser restoration 40 gp

• Prayer of healing (2nd level) 40 gp

Innate Spellcasting 5e

• Dispel Magic 90 gp

• Remove curse 90 gp

• Speak with dead 90 gp

• Divination 210 gp

• Greater restoration 450 gp

• Raise dead^ 1,000 gp

• Resurrection^ 3,000 gp

• True Resurrection^ 30,000 gp

^Characters may instead receive these services by spending treasure checkpoints to purchase spell scrolls.

Services provided by an NPC are limited to this list. Characters may purchase spell scrolls containing these spells using treasure checkpoints which NPCs cast for free to benefit the character who purchased the scroll.

Downtime. You can also use Downtime to have these spells cast, for more info see the Downtime Activities section.

Acolyte Background. A character possessing the acolyte background requesting spellcasting services at a temple of his or her faith can request one spell per day from the Spellcasting Services table for free. The only cost paid for the spell is the base price for the consumed material component, if any.

Multiclassing 5e Spellcasting

Acolyte Temples

Spellcasting Services Dnd 5e

Season: Region – Deities
1: Phlan – Kelemvor
2: Mulmaster – Bane, Loviatar, Tymora, Velsharoon
3: Hillsfar Chauntea, Lliira, Tempus
4: Barovia – Jeny Greenteeth
5: Sword Coast T1: Parnast – Mielikki T2: Stagwick – Chauntea T3: Beregost – Lathander, Waukeen
6: Sword Coast T1: Mirabar – Dumathoin, Sharindlar, Tymora T2: Neverwinter – Oghma, Selûne, Tyr T3: Dagger Falls – Lathander, Tyr
7: Port Nyanzaru – Gond, Savras, Waukeen
8: Waterdeep – Any non-evil deity