Open perk planner ↗Contract of familiar acquisition
Acquisition yama-contract-30840How to obtain these rewards
A contracted Yama fight changes mechanics and adds its contract settlement. Familiar acquisition retains the standard-loot fallback.
What to do
Present the base unnoted contract to Yama’s throne before the encounter
Materials or items used
These may include alternative materials or reusable tools. Follow the requirements and individual reward rules for the exact combination.
Related NPC references
Requirements and conditions
- Contribution is capped damage divided by boss maximum HP, floored to a whole percent. Below 15%, the handler grants ashes and junk and stops before unique, clue and pet checks.
- The main checks are ordered: unique, dossier, lockbox, shards, then standard fallback. A later check is conditional on earlier misses.
- Custom ethereal essence and shiny Yami are explicitly enabled by the live Aleges reward call.
- This contract does not enforce the solo-only flag.
- Only the presenting owner receives its guaranteed settlement. Familiar-contract backing has separate eligibility for unrelated Ironman participants.
How rewards are calculated
- The ordinary unique/dossier/lockbox/shard checks and standard fallback pool remain available.
- Familiar acquisition changes the pet denominator for its eligible participants; a pet remains a roll rather than a guaranteed settlement.
A reward-pool weight is its share within that pool, not your overall chance per completion. Eligibility, pool selection and the listed modifiers still apply.
Reward pool
44 entries| Reward | Quantity | Chance or selection rule | Pool |
|---|---|---|---|
 Smoke rune
| max(1, floor((350 × floor(100 × capped damage / boss maximum HP) + 50) / 100)) | Weighted standard fallback after all earlier main checks fail; available in normal, practice and Familiar-contract fights | Standard fallback |
 Soul rune
| max(1, floor((500 × floor(100 × capped damage / boss maximum HP) + 50) / 100)) | Weighted standard fallback after all earlier main checks fail; available in normal, practice and Familiar-contract fights | Standard fallback |
| Soul rune
| max(1, floor((1000 × floor(100 × capped damage / boss maximum HP) + 50) / 100)) | Weighted standard fallback after all earlier main checks fail; available in normal, practice and Familiar-contract fights | Standard fallback |
 Fire rune
| max(1, floor((40000 × floor(100 × capped damage / boss maximum HP) + 50) / 100)) | Weighted standard fallback after all earlier main checks fail; available in normal, practice and Familiar-contract fights | Standard fallback |
 Wrath rune
| max(1, floor((800 × floor(100 × capped damage / boss maximum HP) + 50) / 100)) | Weighted standard fallback after all earlier main checks fail; available in normal, practice and Familiar-contract fights | Standard fallback |
 Aether catalyst
| max(1, floor((850 × floor(100 × capped damage / boss maximum HP) + 50) / 100)) | Weighted standard fallback after all earlier main checks fail; available in normal, practice and Familiar-contract fights | Standard fallback |
 Diabolic worms
| max(1, floor((90 × floor(100 × capped damage / boss maximum HP) + 50) / 100)) | Weighted standard fallback after all earlier main checks fail; available in normal, practice and Familiar-contract fights | Standard fallback |
 Barrel of demonic tallow (full)
| max(1, floor((1 × floor(100 × capped damage / boss maximum HP) + 50) / 100)) | Weighted standard fallback after all earlier main checks fail; available in normal, practice and Familiar-contract fights | Standard fallback |
 Chasm teleport scroll
| max(1, floor((6 × floor(100 × capped damage / boss maximum HP) + 50) / 100)) | Weighted standard fallback after all earlier main checks fail; available in normal, practice and Familiar-contract fights | Standard fallback |
 Emerald
| max(1, floor((40 × floor(100 × capped damage / boss maximum HP) + 50) / 100)) | Weighted standard fallback after all earlier main checks fail; available in normal, practice and Familiar-contract fights | Standard fallback |
 Ruby
| max(1, floor((40 × floor(100 × capped damage / boss maximum HP) + 50) / 100)) | Weighted standard fallback after all earlier main checks fail; available in normal, practice and Familiar-contract fights | Standard fallback |
 Diamond
| max(1, floor((40 × floor(100 × capped damage / boss maximum HP) + 50) / 100)) | Weighted standard fallback after all earlier main checks fail; available in normal, practice and Familiar-contract fights | Standard fallback |
 Onyx bolt tips
| max(1, floor((150 × floor(100 × capped damage / boss maximum HP) + 50) / 100)) | Weighted standard fallback after all earlier main checks fail; available in normal, practice and Familiar-contract fights | Standard fallback |
 Pineapple pizza
| 3–4 | 15 of 78 standard-fallback tickets choose a supply bundle; one of each pair is selected | Supply bundle / Food |
 Wild pie
| 3–4 | 15 of 78 standard-fallback tickets choose a supply bundle; one of each pair is selected | Supply bundle / Food |
 Prayer potion(3)
| 2 | 15 of 78 standard-fallback tickets choose a supply bundle; one of each pair is selected | Supply bundle / Prayer |
 Super restore mix(2)
| 2 | 15 of 78 standard-fallback tickets choose a supply bundle; one of each pair is selected | Supply bundle / Prayer |
 Super combat potion(1)
| 1 | 15 of 78 standard-fallback tickets choose a supply bundle; one of each pair is selected | Supply bundle / Combat |
 Zamorak mix(2)
| 1 | 15 of 78 standard-fallback tickets choose a supply bundle; one of each pair is selected | Supply bundle / Combat |
 Contract of Familiar Acquisition
| 1 | Presented contract is returned on successful settlement | Contract return |