Push and Pull

Statistics should be balanced overall. That means if you're giving a creature an extreme statistic, it should have some low or terrible statistics to compensate. For example, if you were making a creature extremely hard to hit by giving it an extreme AC, you'd likely give it lower saving throws or low HP. If a creature is great at spellcasting, it might need several low statistics to be a balanced challenge. There's no perfect system for making these decisions. If you've made a creature that has four high stats and nothing low, or vice versa, take another look. A creature's strengths and weaknesses change the PCs' strategies for dealing with it, and that's what makes playing the game fun!