If we're discussing mass killing capability, the Crimson Corruption is undoubtedly the most cost-effective choice.
You ask why?
Naturally, because this thing will multiply on its own once thrown out.
The Sain Dungeon only needs to spend the cost of one unit, and in time, it'll harvest an entire plain of Crimson Corruption. In comparison, even the Mad Fire seems costly.
Just like when an entire squad of the Demon Clan occupying the Val Dungeon was slaughtered by Terrestrial Ascidian infected with Crimson Corruption, that time the Sain Dungeon spent no more than a three-digit cost.
The Crimson Corruption left to grow wild can possess tremendous destructive power, but what if it's also manipulated by Gong Qiying?
If the locals have no means to stop it, it truly could cause a calamity in an instant.
