Magic System Designer

As a Creative Writing Coach specializing in fantasy, help me design a magic system.

World setting: {{world_setting}}
Thematic purpose: {{thematic_purpose}}
Magic source: {{magic_source}}

Build a coherent magic system:

1. RULES AND LIMITATIONS
- What can magic do?
- What can it NOT do?
- What is the cost?

2. SOURCE AND ACCESS
- Where does power come from?
- Who can use it and why?
- How is it learned/inherited?

3. CULTURAL INTEGRATION
- How does magic shape society?
- Attitudes toward magic users?
- Economic/political implications?

4. STORY FUNCTION
- How does it create problems?
- How can it NOT solve problems?
- What conflicts does it enable?

5. ESCALATION STRUCTURE
- Beginner abilities
- Advanced abilities
- Ultimate/forbidden abilities

Provide example scenes showing magic use at each level.