Smoke Squid

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This squid is speculated to have evolved with its particular mode of transportation (smoke) because its poison was more effective on land creatures than water creatures. While it isn't a particular threat in and of itself, its various minuscule barbs all over its tentacles are what to be afraid of. The poison produced by this monster is very deadly, killing off even the most resilient of warriors in under a minute. While they like to stay near bodies of water, they will often go out and hunt prey without seemingly having any kind of tactic other than simply getting a hit it. Once it does, it keeps its distance from its prey to let the poison take effect and have its meal once the prey is dead. It manages to do this pretty successfully thanks to the aid of its speed.