Brimstone ring pieces
~1/181 each
Pieces from one set
1/56 per moon
Enhanced + armour seed
1/2,000 & 1/120 (CG 1/400 & 1/50)
Voidwaker piece
1/360 each
Metamorphic dust + twisted kit
1/400 & 1/75
Any unique
~1/66.7 for any unique
All wilderness rings
1/512 each
Ancestral pieces
4/60 of a purple
Burning claw
499/250,000 (~1/501)
Uniques
Head 1/50 · visage 1/5,000
Uniques
Fang 1/600 · halberd 1/200
Sanguine dust + both kits
1/275 · 1/150 · 1/100
Complete wilderness weapon
Weapon 1/26,667 · kit 1/196
Uniques
Armour 1/381 · hilt 1/508
Uniques incl. mutagens
1/1,024 each · mutagen 1/13,107
Uniques
Fang 1/340 · kisten 1/520
Uniques
1/43 any (1/172–1/516)
Boss pet
~1/500 – 1/5,000
Uniques
Sword 1/127 · cbow/hilt 1/508
Zalcano shard
1/750 – 1/1,500
DT2 bosses
Soulreaper axe
1/512 – 1/1,088 per piece
Wintertodt & Tempoross
Tome of fire & tome of water
1/1,000 & 1/1,600
Theatre of Blood
Justiciar pieces
2/19 of a purple (1/9.1)
Corporeal Beast
Any sigil
Spectral/arcane 1/1,365 · elysian 1/4,095
Abyssal Sire
Unsired
1/100
Yama
Soulflame horn + oathplate piece
1/300 & 1/200
The Hueycoatl
Tome of earth or dragon hunter wand
1/90 & 1/105
Barrows
Pieces from one set
~1/350 per piece (1/15 any)
Raids
Any megarare
Tbow 2/60 · scythe 1/19 · shadow 1/24
Fortis Colosseum
Sunfire fanatic armour pieces
~1/8.4 per full run
General Graardor
Uniques
Armour 1/381 · hilt 1/508
Corrupted Gauntlet
Speedrun
Time-based
Slayer
Imbued heart or eternal gem
Superiors only · ~1/352 at 85 Slayer
Bosses
Any jar
1/200 – 1/5,000
Tombs of Amascut
Masori pieces
~1/12 of a purple
Chambers of Xeric: CM
Speedrun
Time-based
K'ril Tsutsaroth
Uniques
Spear/staff 1/127 · SotD/hilt 1/508
DT2 bosses
Virtus pieces
1/1,536 – 1/3,264
Doom of Mokhaiotl
Uniques
1/540 each at delve 9 (1/180 any)
Mad Angel
Hallowfell
1/127
Grotesque Guardians
Uniques
Gloves/ring 1/500 · core 1/1,000