Nechryael

Nechryael are level 115 demons that require level 80 Slayer to kill. They are found on the top floor of the Slayer Tower in Morytania and in the Chaos Tunnels. They give 105 Slayer experience when killed and do not require any special equipment to kill. They are also currently the only monster to drop Rune boots. Their drops are very similar to the drops of greater demons.

Strategy
As nechryael are demons, the magical abilities of Silverlight, Darklight, and Holy water affect them.

A nechryael's main attack is a headbutt that hits up to 119 life points. When engaged in melee combat, a nechryael may randomly summon up to two level 46 death spawns to assist it. These death spawns hit a maximum of around 50, and will attack the player even if the player is standing in a single combat zone and is already under attack from the nechryael that summoned them. Players being attacked by death spawn will not automatically attack them even if auto-retaliate is switched on.

Death spawn can be avoided by running a fair distance away, such as to the opposite end of the room. After a few seconds, the death spawn loses interest and stops trying to attack the player. This is easiest to do in the Slayer Tower, with its large rooms but is also fairly easy to do in the Chaos Tunnels. This tactic works best after the summoning nechryael is killed, or otherwise a death spawn that disappears will soon be replaced by a newly summoned one.

Death spawn drops nothing but Accursed Ashes when killed. Most players with a high defence choose to ignore them completely because they inflict so little damage that they are not worth the time to avoid. However, death spawn have a magic based attack so they will be able to hit through the melee prayer. This could be an issue if you choose to use Dharok's armour while killing nechryael.

Using a Guthan's set against a nechryael is extremely effective. Also, one could use Guthan's/Saradomin Godsword special/other healing method on the death spawn because of their low defence compared to a nechryael.

Additionally, using burst or barrage spells or chinchompas on nechryael are a great source of crimson charms for players (in the chaos tunnels) because the rune drops can offset some of the cost of the runes or chinchompas.

For those who wish to mage or range nechryael in the Slayer Tower, there is a table in the northwest corner of the room that can be effectively used as a safespot. Another good strategy is to stand behind a death spawn so the nechryael will get trapped behind it.

Locations

 * Slayer Tower (top floor)
 * Chaos Tunnels
 * Daemonheim

100% Drops

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Armour

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Weapons

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Runes

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Seeds

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Other

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Trivia

 * The word "Nechryael" appears to be both the singular and plural as indicated by slayer masters when assigning them and giving tips on fighting them, and by the Ring of Slaying when checking the progress of the assignment. In this way, "Nechryael" is an irregular plural like "Sheep". This is also the case with Bloodveld, Dagannoth, and Catablepon, among others.
 * Although auto-retaliate does not work against death spawn, their attack will still interrupt teleporting with a 2-click teleport like a ring of duelling (unless you equip the item and then teleport through the Equipment screen).
 * You can log out while a death spawn attacks you.
 * The Home teleport spell is not interrupted by death spawns.
 * When being attacked by death spawns, if you open up your equipment tab, you will not get the message "You cannot open the equipment screen while in combat." However, they will interrupt you viewing the equipment tab when attacked by them.