Thrall

Thralls are undead beings which can be summoned to attack enemies.

Thralls are summoned with resurrection spells in the Arceuus spellbook, which requires completion of A Kingdom Divided. In addition to the required Magic level and runes, the player must have the Book of the Dead either wielded or in their inventory, along with 2-6 prayer points in order to summon a thrall.

The impish whistle can be used to unlock a cosmetic override for thralls, giving them the appearances of imps.

Icon	Mobile icon	Spell	Level	Runes	XP	Prayer points cost	Thrall attack style	Thrall max hit	Thrall DPS
		Resurrect Lesser Ghost	38	10 1 5	55	2	Magic	1	0.208
		Resurrect Lesser Skeleton	38	10 1 5	55	2	Ranged	1	0.208
		Resurrect Lesser Zombie	38	10 1 5	55	2	Melee	1	0.208
		Resurrect Superior Ghost	57	10 1 5	70	4	Magic	2	0.416
		Resurrect Superior Skeleton	57	10 1 5	70	4	Ranged	2	0.416
		Resurrect Superior Zombie	57	10 1 5	70	4	Melee	2	0.416
		Resurrect Greater Ghost	76	10 5 1	88	6	Magic	3	0.625
		Resurrect Greater Skeleton	76	10 5 1	88	6	Ranged	3	0.625
		Resurrect Greater Zombie	76	10 5 1	88	6	Melee	3	0.625

Thralls notably always deal successful hits, with the damage roll ranging from 0-3 depending on the tier of spell used, as well as ignoring the flat armour stat. This makes them fairly powerful allies for prolonged encounters, speed-based Combat Achievements, and places where magic spells (not including powered staves) are not needed.

Thralls have an attack speed of 4, or once every 2.4 seconds. Skeletal and Ghostly thralls have an attack range of 6, with the distance reduced by 1 when attacking from the defending NPC's south or west side. It may be inferred that the attack range is calculated using the distance from the south-west corner of the thrall, to the north-east corner of the defending NPC, repeated for every tile occupied by the defending NPC.

Thralls cannot attack other players. Damage dealt by the thrall counts as damage dealt by the player that summoned it.

The magic thralls' projectiles will hit enemies 1-2 ticks earlier (depending on distance) than the ranged thralls. Therefore, magic thralls are preferred whenever there are no special type resistances. Some bosses, however, such as The Hueycoatl, have blue-coloured attacks to dodge, so the ranged thrall can be preferable as to not be confused with or masking away a dangerous tile, as he is yellow.

Thralls will remain for a set amount of time (0.6*CurrentMagicLevel seconds (i.e. 1 tick per level)), or twice as long after claiming the Master Combat Achievements rewards. There is a ten second cooldown before the player can cast another resurrection spell, although the current thrall will despawn in the process.

As the thrall's duration is dependent on the player's Magic level, boosting it will subsequently increase the thrall's duration:

Thralls cannot pass between rooms (for example, a thrall summoned in the Corporeal Beast lobby will remain there even when the player enters the Beast's arena and attacks it)

Thralls cannot be resurrected at the following locations:

• Castle Wars
• Chasm of Fire (with the exception of Yama's Domain)
• Clan Wars
• Certain Temple Trekking encounters
• During the fight against Galvek
• During the fight against Robert the Strong
• During the fight against Vanstrom Klause
• During the fight against Fragment of Seren
• During the fight against Lowerniel Drakan
• Farming Guild (with the exception of Hespori's cave)
• Grand Exchange
• Jormungand's Prison
• Player-owned house
• Soul Wars
• Ungael crater
• Tombs of Amascut lobby
• Theatre of Blood bank area
• On a sailing boat
• Guardians of the Rift

• Ghostly thralls, who attack with Magic
  • Lesser ghostly thrall
  • Superior ghostly thrall
  • Greater ghostly thrall
• Skeletal thralls, who attack with Ranged
  • Lesser skeletal thrall
  • Superior skeletal thrall
  • Greater skeletal thrall
• Zombified thralls, who attack with Melee
  • Lesser zombified thrall
  • Superior zombified thrall
  • Greater zombified thrall

There is a Medium combat achievement (worth 2 points) called Sit Back and Relax which requires the player to deal 100 damage to creatures using undead thralls. This can be accomplished accumulatively across multiple undead thrall casts and multiple enemies.