Wild magic anything. We're hanging this on that "spontaneously develop" thing. With full player knowledge of the risks, possible metacurrency, players having (mostly) control over a character's involuntary reactions, and only risking a character sheet... some people say yes to wild magic abilities, bloodlines, prestige classes, etc. IRL? You're the non-consensual character who will get a potentially lethal or crippling surprise some day. And if you survive that first wild surge you'll always have to live with having a power that improves your life and has only a tiny chance of going terribly wrong. Really, it's as safe as driving a car. Right?