“The Elder Guardian is a hostile mob which only spawns underwater in ocean monuments. It is a stronger variant of the Guardian.”
3 Elder Guardians can be found in every Ocean Monument, which is a naturally generated structure found in Oceans.
They attack players on sight (even Squids) and have 2 types of attack: a laser and a thorn-like attack. The laser takes some time to charge, doing no damage in the meantime. They will also inflict you with Mining Fatigue, making it harder to break blocks.
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