|Release||25 June 2018 (Update)|
|One of the mysterious Council of Seven. A master of the Order of Seiryu.|
|Equipment XP (2H/MH & Armour/OH)|
|540 / 360 / 180|
4 ticks (2.4s)
Elei has high praise for Masuta, commenting on his ability to defeat twenty acolytes bare-handed and would be content enough to even achieve a fraction of his power. Masuta would unknowingly work for Xau-Tak when his fellow member Himiko revealed to him and the others a vision influenced by it, who had used Madame Shih as its puppet.
In Story mode his health is reduced by 50% and his damage output is reduced by 66%
Masuta drops onyx dust, unless his warspear or Himiko's Vision is dropped, which replaces the dust.
|Dungeoneering token||500; 5,000[l 1]||Always||Not sold|
|Himiko's Vision||1||Rare[l 2]||Not sold|
|Relic of aminishi (common)||1||Common||Not sold|
|Relic of aminishi (uncommon)||1||Uncommon||Not sold|
|Weapon poison++ (1)||1||Uncommon||4,262|
|Prayer potion (1)||1||Uncommon||651|
|Menaphite gift offering (small)||1||Uncommon||Not sold|
|Suspicious gunpowder||1||Uncommon||Not sold|
|Relic of aminishi (rare)||1||Rare||Not sold|
|Onyx dust||1–5||Very rare||21,522–107,610|
|Seasinger weapon upgrade kit||1||Very rare||792,651|
|Tetsu sword upgrade kit||1||Very rare||478,605|
|Steadfast scale||1||Very rare||13,281,692|
|Sealed clue scroll (elite)||1||Very rare||Not sold|
|Sirenic scale||1||Very rare||698,722|
|Draconic visage||1||Very rare||1,187,911|
|Seiryu's claw||1||Very rare||Not sold|
- Swift as the Coursing River ( 30) - Defeat Masuta the Ascended with 65% of the calm water effect or more.
- Force of a Great Typhoon ( 30) - Defeat Masuta the Ascended without any stacks of the calm waters effect.
- Strength of a Raging Fire ( 50) - Defeat Masuta the Ascended with at least 7 thrashing waters still remaining.
- I'll Pulverise You! ( 20) - Use Pulverise on Masuta the Ascended at same time he uses it.[sic]
- Masuta (マスタ) is "master" written in katakana minus the long-vowel mark.
- The titles of three of the feats from defeating Masuta are references to the song "I'll Make a Man Out of You" from the 1998 film Mulan.
- Upon release there was a glitch where the player(s) would get 1 killcount during the transition from phase 1 to 2. Upon killing him, a second kill would be added. This has since been fixed.
- ^ Jagex. Mod Shauny's Twitter account. 29 June 2018. Mod Shauny: "#RSHotfix: Temple of Aminishi lore books now have a greater chance of dropping in story mode than in normal mode."
- ^ Jagex. Mod Orion's Twitter account. 9 July 2018. Mod Orion: "1 kc would give a 1.1/10 chance. To put it clearer: Base chance is 10% 1kc = 11% 50kc = 60% 90kc = 100%"