I had an idea for a spell that sits somewhere between Shifting the Odds, Strings of Fate, and Chaos Mastery that I thought I'd share.

Flash Mob (Fate •••)
Practice: Weaving
Primary Spell Factor: Duration
Suggested Rote Skills: Politics, Socialize, Stealth
Crowds move in at-once chaotic and predictable patterns, and this spell allows the mage to direct their movements in a general way. This spell automatically uses Area for Scale. Choose one when casting this spell:
• The mage ensures that people no fewer in number than Potency will occupy the area at...