Sinister Offering

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Sinister Offering icon (mobile).png

Sinister Offering is a spell within the Arceuus spellbook that requires level 92 Magic and the completion of A Kingdom Divided to be cast. When cast, the spell instantly offers up to three bones in the player's inventory, granting three times the normal experience for burying them. If converting superior dragon bones, players will require level 70 Prayer to offer them via the spell. Players may only cast offering spells once every 4.8 seconds.

The spell also restores one prayer point for each set of bones converted; for Ourg, dagannoth, hydra and superior dragon bones, two prayer points are restored instead.

Cost[edit | edit source]

Spell cost
InputCost
1Blood rune.png1Wrath rune.png824

Prayer experience[edit | edit source]

Prayer Bones XP Spell XP[1] GP/XP XP/Hr[2]
Bones.png Bones 4.5 13.5 -27.09 24,300
Monkey bones.png Monkey bones 5 15 -44.18 27,000
Bat bones.png Bat bones 5.3 15.9 -42.31 28,620
Big bones.png Big bones 15 45 -8.61 81,000
Jogre bones.png Jogre bones 15 45 -27.66 81,000
Zogre bones.png Zogre bones 22.5 67.5 -8.81 121,500
Shaikahan bones.png Shaikahan bones 25 75 -56.02 135,000
Babydragon bones.png Babydragon bones 30 90 -8.61 162,000
Wyrm bones.png Wyrm bones 50 150 -9.14 270,000
Dragon bones.png Dragon bones 72 216 -9.6 388,800
Wyvern bones.png Wyvern bones 72 216 -9.43 388,800
Drake bones.png Drake bones 80 240 -10.96 432,000
Fayrg bones.png Fayrg bones 84 252 -12.38 453,600
Lava dragon bones.png Lava dragon bones 85 255 -14.22 459,000
Raurg bones.png Raurg bones 96 288 -17.03 518,400
Hydra bones.png Hydra bones 110 330 -15.84 594,000
Dagannoth bones.png Dagannoth bones 125 375 -21.85 675,000
Ourg bones.png Ourg bones 140 420 -98.18 756,000
Superior dragon bones.png Superior dragon bones 150 450 -22.2 810,000
  1. Assumes three bones per cast
  2. Assuming 600 casts per hour, gaining Magic 108,000 per hour.

Changes[edit | edit source]

Date Changes
4 August 2021
(update)

The spell can now be performed without interrupting the player's actions.

30 June 2021
(update)

Offering spells are now cast instantly, and have a cooldown of 8 game ticks (4.8 seconds).