Contract of glyphic attenuation

Contract of glyphic attenuation
Released							14 May 2025 (Update)
Members							Yes
Quest item							No
League region							Kourend✓
Properties
Tradeable							Yes
Equipable							No
Stackable							No
Noteable							Yes
Options							Read, Drop
Examine							A contract issued by Yama. Present it to him to discuss some new terms.
Values
Value							75,000 coins
Alchemy							Not alchemisable
Weight							0.4 kg
Grand Exchange
Exchange							130,287 coins (info)
Buy limit							50
Daily volume							1,799
View real-time prices
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Advanced data
Item ID							30810
Link							MOID

Contract of glyphic attenuation is a contract used to challenge Yama to a more difficult fight for the bottom piece of the purifying sigil. It can be dropped by Yama himself through opening dossiers, or via black, greater, and lesser demons in the Chasm of Fire after the player has agreed to Yama's terms by speaking to him after A Kingdom Divided.

To obtain this contract from the demons in the Chasm of Fire, the final blow must come from special attacks. The drop rate will 5x while the yellow sigil is active above their heads. Players can speak to the Disciple of Yama outside the chasm to learn about which sigil is currently active.

The contract is consumed upon starting the fight, although if successful the challenger will receive the contract again as a drop. Yama will not drop standard loot upon completion of this contract.

When the player fights Yama after signing the contract of glyphic attenuation, the following changes apply:

• Yama's health is increased to 2875.
• Yama's defence bonuses are now +80 crush defence and +666 for all others.
• Glyphs protect players for 3 ticks instead of 10.
• Players take 3x more damage when absorbing a Glyph of Fire.
• Prayer points are drained 3x more when absorbing a Glyph of Shadow.
• Damage dealt can be increased with a higher prayer bonus.
• Prayer bonuses now affect drain rate inversely (i.e. drains faster instead of slower)
• While not stated, the effects of enhanced ruby and diamond bolts (both in their adamantite and dragon variants) will have their effects disabled for the duration of the contract.

Additionally, the following changes also apply for all sigil contracts:

• Yama must be defeated alone.
• Yama's attack cycle is accelerated from 8-tick to 7-tick.
• Yama does two standard attacks before a special attack; glyphs respawn faster.
• Shadow Waves and Fire Streaks appear more frequently.
• Special attacks in phase 1 land 1 tick earlier than usual.
• Phase transition thresholds trigger at 75% and 50% health.
• The Judge of Yama throws fire bombs every 3 ticks, and throws two per attack.
• Shadow Waves and Shadow Crashes are more frequent in phase 3.

Source	Level	Quantity	Rarity	League region
Lesser demon Chasm of Fire	82	1	1/123; 5/123
Greater demon Chasm of Fire	92	1	1/81; 5/81
Black demon Chasm of Fire	172	1	1/53; 5/53
Yama Contract	1238	1	Always
Dossier	N/A	3	260/1,740

• Reading the contract.
• Placeholder text before terms were released

• The Morse code written on the item is intended to spell the word "CONTRACT". However, the "A" (.-) is erroneously written as "N" (-.), so it says "CONTRNCT" instead, and this mistake is present in all of Yama's contracts.