Bug Reports - Hyrri's Truth Precision mana reservation efficiency has no effect on Precision - Forum - Path of Exile
Bug Reports - Hyrri's Truth does not affect Precision reservation - Forum - Path of Exile
The Mana Reservation Efficiency mastery has been replaced as there is now a much larger amount of Mana Reservation Efficiency for Curse Auras on the passive tree." (The mastery was 30%) :
Gameplay Help and Discussion - Mana Res Efficiency of Stance Skills from Attack Mastery provided no reduction. (Blood Magic) - Forum - Path of Exile
Bug Reports - Determination Mana Reservation Mastery and Blood Magic - Forum - Path of Exile
orb of conflict/maven hater !ruespark for lower end version !pob !poecoaching - imexile on Twitch
More than 99% of life reserved : r/pathofexile
Reserved Mana calculation for Determination not correct · Issue #5902 · PathOfBuildingCommunity/PathOfBuilding · GitHub
Reservation - Path of Exile Wiki
Crucible League: Best Champion Crucible League build for Path of Exile