Writing a domain card
A good domain card does one thing, says when it happens, and says what it costs.
Pick the level by comparing
Open the domain you are writing for and read the cards one level below and one above your idea. If yours is clearly better than both, raise its level or add a cost.
Recall cost
Recall is the Stress you pay to swap the card in from your vault outside of a rest. Cards you want available in an emergency should cost more. In the SRD the average recall cost is 0.7 at level 1, 1.3 at level 5 and 1.6 at level 10.
Ability, spell or grimoire
- Ability: something the character does through training or nature.
- Spell: magic, usually with a Spellcast Roll.
- Grimoire: a book holding several smaller spells on one card. Keep each one to two sentences.
Costs the game already uses
Spend a Hope, mark a Stress, once per rest, once per long rest, place the card in your vault. Reuse those before you invent a new resource.
Start a domain card