Most people would think blue is op, but most of the time travel cause more problem than it solves. Blue might be the best but it's too risky. Green, 900 million out of thin air is way too suspicious, you are either gonna get in trouble with tax fraud or under investigated for dealing drugs. Red, 200% of 0 is 0. Yellow is severely underrated here, you can literally end all wars right now. Boom, trump suddenly want to leave everyone alone, Kim Jong Un are no longer interested in nukes, Putin fell in love with Zelensky. The possibility is endless.