What it does
"Prince of Chaos" isn't an official Magic: The Gathering keyword or ability—it doesn't appear in the comprehensive rules or on any printed card's reminder text. You may be thinking of a specific card name, a flavor title, or confusing it with a real mechanic.
If you're after genuine chaos-themed mechanics, the closest official ones are abilities tied to cards like Mana Clash, Goblin Game, or the planar die from the Planechase format, where rolling chaos symbols triggers random effects. Cards like Possibility Storm or Knowledge Pool also create chaotic, swingy gameplay popular in casual Commander pods.
If you can share the exact card or where you saw "Prince of Chaos," I'll explain precisely how it works and its Commander relevance. Otherwise, I'd avoid assuming rules for a term that doesn't exist mechanically.
Iconic cards with Prince of Chaos
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