Dark Gold Key

As soon as the Darkfrost Potion was activated, cold air emitted nonstop, filling up the dungeon corridor. The Twelve Frostramparts Formation became colder! 

Harsh white frost combined with its chill seeped into the marrows of the spiders that were near the Frostramparts Formation. The frost slowly covered the spiders' bodies!

It looked as if they were about to be frozen solid at any moment.

The spiders that were closest outside the Twelve Frostramparts Formation had it worse. They initially already had their movement and attack speed lowered, but now they were about to be frozen alive! It would be difficult to even move an inch. The surrounding spiders that were about ten meters from the upgraded Twelve Frostramparts Formation were all affected and their speeds were enormously lowered.

But the first one to be affected was the Mutated Mannequin Spider itself!

The Darkfrost Potion was specially prepared for it!