@Override
    public void onUpdate(ItemStack itemStack, World world, Entity entity, int i, boolean flag) {
        super.onUpdate(itemStack, world, entity, i, flag);

        if (!world.isRemote) {
            NBTTagCompound nbtDataCompund = itemStack.getSubCompound("coolDown", true);

            int coolDown = nbtDataCompund.getInteger("coolDown");
            if (coolDown > 0) {
                --coolDown;
                nbtDataCompund.setInteger("coolDown", coolDown);
            }
        }
    }

    @Override
    public boolean itemInteractionForEntity(ItemStack itemStack, EntityPlayer entityPlayer, EntityLivingBase entity, EnumHand hand) {

            NBTTagCompound nbtDataCompund = itemStack.getSubCompound("coolDown", true);
            if (nbtDataCompund != null) {
                int coolDown = nbtDataCompund.getInteger("coolDown");

                if (coolDown > 0) {
                    return false;
                }

                if (coolDown == 0) {
                    if (entity instanceof EntityMob) {
                        if (itemStack.getItemDamage() > 0) {
                            entity.setHealth(0.0F);
                            nbtDataCompund.setInteger("coolDown", ItemConfig.magicStoneCooldown);
                            if (!entity.worldObj.isRemote) {
                                entityPlayer.addChatMessage(new TextComponentString(TextFormatting.GRAY + "Soul Absurbed!"));
                            }
                            itemStack.damageItem(-1, entityPlayer);
                            return true;
                        } else {
                            if (!entity.worldObj.isRemote) {
                                entityPlayer.addChatMessage(new TextComponentString(TextFormatting.GRAY + "The  Magical Stone seems to be full?"));
                                entityPlayer.addChatMessage(new TextComponentString(TextFormatting.GRAY + "It seems to be useless now."));
                                entityPlayer.addChatMessage(new TextComponentString(TextFormatting.GRAY + "I wonder whats inside?"));
                            }
                            return true;
                        }
                    } else if (!entity.worldObj.isRemote) {
                        entityPlayer.addChatMessage(new TextComponentString(TextFormatting.GRAY + "Why has this stoped working?"));
                    }
                } else {
                    entityPlayer.addChatMessage(new TextComponentString(TextFormatting.GRAY + "Why has this stoped working?"));
                }
            }
        return false;
    }