The Heart of the Radiant Dragon Beast:
The Radiant Dragon Beast is a warcraft containing extremely powerful radiation energy. Its heart is the organ that stores the most radiation energy. After their death, it can become a powerful bomb at any time, enough to cause devastating horror to warcraft below King Level, with an impact radius of about ten kilometers.
Zhang Menglong put away the heart of this Radiant Dragon Beast. These Radiant Dragon Beasts are creatures that feed on radiation energy, so the explosion of the Radiant Dragon Beast's heart probably won't have significant damage or impact on them.
But during the Myriad Tribes' War, facing enemy hordes, this would definitely be a nightmare for any Martial Artist below the Dao Realm multiplied by a hundred!
Of course, when the next batch of warcraft appears, these things can still be used and have strong lethality against warcraft.
