Compared to the Water Manipulation Skill, the Rain Summoning Technique is much weaker in offensive capabilities, but its defensive abilities are extremely strong. The most important part is that it directly compensates for the weaknesses of the Water Manipulation Skill, as the compatibility between the two is incredibly high, making their combined use remarkably efficient.
However, the Water Manipulation Skill has its own unique limitations. On its own, it offers very limited combat improvements. Its greatest value lies on the battlefield, where any unexpected weather change could potentially sway the outcome of the battle. In solo combat against experts of the same realm though, its role is quite limited.
Additionally, the biggest drawback of this Divine Technique is its overly harsh cultivation requirements. Because it directly alters the grand momentum of the world, the understanding required of the Great Dao and natural order is exceptionally high.
