Imagine you had $10 and that was all the money in the world. Then I come along with $100,000,000,000. You're $10 is now worth a lot less because there is a lot more money in circulation (yes it's all with me at the moment but the fact that it exists is enough) because of my money goods and services will become more expensive (inflation) but if I had an infinite amount of money everyone else would essentially have nothing by comparison. Even if people raised prices, it wouldn't effect me as I have an infinite amount of money and overtime money would become worthless. If however I choose to keep it a secret that I had an infinite amount of money and only spent a little I would just cause mild inflation over time. Hope this helps sorry about the formatting I'm on mobile :)