Technically not a soft-depend of RealisticSeasons but the other way around, DeadlyDisasters adds many well coded and cool disasters to your server. Each season has its own disasters and it feels like it is actually part of the RealisticSeasons plugin itself. Big, big thanks to the developer for adding this. The plugin adds disasters like sinkholes, earthquakes, tornadoes, water geysers, acid storms, extreme winds, blizzards, sand storms, tsunamis, meteors, hurricanes and more. All these disasters are of high quality. Prepare yourself, these disasters aren't a joke.