This is a simple mod that adds different items to the game, these items include medallions & some blocks. None of the blocks spawn in the world so it won't affect previous saves. The blocks can be crafted out of vanilla Minecraft blocks & items and no other mods are required. The medallions give the player useful tools such as teleportation into the sky (Sky Medallion), I use this for elytras (using the backlytra mod) in my modpack for my server. Other medallions include Water, Fire and soon Ice.