Magic CloverWebsite: https://www.minecraftforum.net/forums/mapping-and-modding-java-edition/minecraft-mods/1291695-magic-clover-four-leaf-clover-in-minecraft
Four-Leaf Clovers are a random drop from grass (chance is configurable). When you right-click it, a random item or block (or creeper) will be dropped on the ground in front of you. You can also use a dispenser to activate this item.
For Minecraft 1.6.4