DRAGONS! add a volcano biome with a red dragon (and put it in the nether), put a white dragon in the taiga, ice mountains, and ice plains (put it most common in the ice mountains and least common in the taiga) blue in the oceans and on islands, and green on every other biome. (except the end) and make them have varying strength (Green is easiest, white is second easiest, blue is normal, and red is hard) You don't have to do it exactly like I said it but it would be AWESOME!
