Elder Guardian

The Elder Guardian is a hostile mob which is hostile and only spawns underwater, in water dungeons. It is a variant of the Guardian.

The Elder Guardian spawns 3 times in set sections of the water dungeon. Elder Guardians inflict Mining Fatigue III on nearby players, the purpose of this being to protect the treasures (Gold Blocks And Wet Sponges) of the dungeon from being mined until after the dungeon has been fully conquered, as well as to prevent players from simply mining through the dungeon walls.

The Elder Guardian attacks by sending out a large laser beam which harms the player. In addition, Elder Guardians can target and damage players who are riding in boats; however once the player is out of range, the Guardian's laser will disengage from the player, and deal no damage.

Behavior
Elders Guardians do not swim around as much as normal Guardians, however they act the same as regular guardians on land. Their eyes will follow and stare at any nearby players, and will always look directly at who they're attacking. This makes them the first mob with dynamic eyes.

Once each minute, the Elder Guardian will search for players in a 50-block radius who are not afflicted with Mining Fatigue, who are afflicted with a level of fatigue lower than III, or whose affliction will wear off in less than one minute. The players found will be inflicted with Mining Fatigue III for 5 minutes, and a ghostly image of the Elder appears to the player.

Attacking
The Elder Guardian has two methods of attack, firing its laser and a thorn-like attack. The laser takes several seconds to charge, doing no damage in the meantime, and changing from purple to bright yellow. Once charged, the beam abruptly ends and deals damage. The Elder Guardian will swim around for a few seconds before firing again. If the target comes near the Elder Guardian while it is firing its beam, it will stop firing and swim away until it is at a comfortable range, at which point it will continue attacking. The beam cannot be dodged, but can be obstructed by solid blocks.

Combat
Elder Guardians are very resistant to melee attacks when under water, as the player will not be able to quickly approach the Guardian due to the water's slowing effect. Guardians will swim away when approached by a player it is targeting, and the Guardian will deal 1 heart of damage every time it is hit when its spikes are extended. If cornered, the Guardian will usually extend its spikes and fire at the player, even at point blank range.

The Elder Guardians are resistant to fire damage, but if somehow are brought to land, they might take some fall damage from their swift movement.

If the player must fight a Elder Guardian with melee, they should try to corner it and hope for the best, or else try to maneuver it into swimming within melee range repeatedly.

The Elder Guardian cannot shoot as fast as a player with a bow can, so a skilled player will be able to shoot the Guardian, and then hide to break the beam's lock, repeating until the Guardian is dead. If the Guardian is in shallow water the player can use a fishing rod to pull it out of the water onto land where the players can then kill it with melee without being shot at or hurt by the spikes.

The Elder Guardian has a very large amount of HP (80), making melee attacks even harder. Elder Guardians do more damage than regular Guardians. Diamond equipment enchanted with Respiration and Depth Strider, swords and bows are recommended.

Fighting Elder Guardians is incredibly dangerous without armor. Armour is essential to combating Elder Guardians, especially within the Water Temples. Entering their territory without armor will almost always lead to a swift death, even if armed with a sword or bow and arrow.

Trivia

 * After Giants and Iron Golems, Elder Guardians have the most health points out of any non-boss mob.
 * Elder Guardians spawned with the /summon command start with only 30 HP, the same as a normal Guardian.
 * To spawn the Elder guardian, use