Death Knight :
Blood : 1 point = 0.44% extra https://www.wowhead.com/spell=49998/death-strike healing converted to your shield ; 0.22% extra attack power
Frost : 1 point = 0.44% extra Frost damage
Unholy : 1 point = 0.40% extra Shadow and pet damage
Demon Hunter :
Havoc : 1 point =0.40% extra Chaos damage
Vengeance : 1 point = 0.33% extra Agility converted to Armor
Druid :
Balance : 1 point = 0.11% extra Nature and Arcane damage ; 0.055% extra Nature and Arcane damage to targets affected by https://www.wowhead.com/spell=164815/sunfire or https://www.wowhead.com/spell=164812/moonfire respectively
Feral : 1 point = 0.41% extra damage on your finishers, bleeds and other DoTs
Guardian : 1 point = 1.545% extra health and healing (affects healing from outside sources) and 0.22% extra attack power
Restoration : 1 point = 0.11% extra healing per HoT on the target
Evoker :
Augmentation : Versatility buff does not work solo, 1 point =0.075% extra duration on our helpful auras
Devastation : 1 point =0.33% more damage to targets depending on their health percentage : 100% effective if target is at 100% HP, 50% if at 50%, 30% is a cap and you never go below 30% effectiveness
Preservation : 1 point =0.40% extra healing depending on how many more HP you have than the target, always 100% effective on yourself
Hunter :
Beast Mastery : 1 point = 0.42% extra pet damage, affects https://www.wowhead.com/spell=259489/kill-command
Marksmanship : 1 point = 0.138% extra range on your abilities, 0.31% extra damage on your abilities
Survival : 1 point = 0.178% extra damage increase (affects all damages besides trinkets or bombs for example), you have a baseline flat 3% damage reduction that does not increase with mastery ; all those bonuses are doubled when within 25 meters of your pet
Mage :
Arcane : 1 point = 0.265% extra mana regen and maximum mana, 0.2%/0.136% boost per charge to the exisiting 67%/94% of https://www.wowhead.com/spell=30451/arcane-blast and https://www.wowhead.com/spell=44425/arcane-barrage respectively, 0.22% extra damage to other arcane abilities.
Fire : 1 point = 0.137% extra damage of your main fire spells converted to a DoT
Frost : 1 point = 0.22% extra https://www.wowhead.com/spell=148022/icicle damage, 0.214% extra https://www.wowhead.com/spell=190356/blizzard and https://www.wowhead.com/spell=84721/frozen-orb damage, 0.143% extra damage on https://www.wowhead.com/spell=30455/ice-lance
Monk :
Brewmaster : 1 point = 0.194% extra chance to dodge when hit or using https://www.wowhead.com/spell=100784/blackout-kick, stacking until you dodge an attack, 0.22% extra attack power
Mistweaver : 1 point = 1.70% extra healing on your https://www.wowhead.com/spell=191894/gust-of-mists
Windwalker : 1 point = 0.38% extra damage on your abilities as long as they differ from the one you previously used
Paladin :
Holy : 1 point = 0.33% extra healing depending on the proximity of the target, always 100% effective on yourself
Protection : 1 point = 0.22% extra chance to block (DR will happen), 0.22% extra attack power, 0.06% damage reduction in https://www.wowhead.com/spell=26573/consecration. Stong synergy with the https://www.wowhead.com/spell=152261/holy-shield talent that elevates this mastery as a top one
Retribution : 1 point = 0.34% extra Holy damage, 0.167% chance for https://www.wowhead.com/spell=275779/judgment to deal extra damage (120% of attack power, affected by mastery, versatility and weapon damage)
Priest :
Discipline : 1 point = 0.3% extra healing to targets affected by https://www.wowhead.com/spell=81749/atonement ; atonement is triggered by https://www.wowhead.com/spell=17/power-word-shield, https://www.wowhead.com/spell=139/renew, https://www.wowhead.com/spell=2061/flash-heal and https://www.wowhead.com/spell=194509/power-word-radiance should you ever have a reason to use it
Holy : 1 point = 0.21% of your healing is taken into consideration to put a 4 seconds HoT on the target
Shadow : 1 point = 0.11% extra damage dealt per https://www.wowhead.com/spell=589/shadow-word-pain, https://www.wowhead.com/spell=34914/vampiric-touch and https://www.wowhead.com/spell=335467/devouring-plague on the target
Rogue :
Assassination : 1 point = 0.375% extra damage to your poisons
Outlaw : 1 point = 0.397% extra damage to https://www.wowhead.com/spell=86392/main-gauche
Subtlety : 1 point = 0.54% extra damage on your finishers
Shaman :
Elemental : 1 point = 0.157% extra elemental and physical damage (all of our damage technically) and an extra 0.414% chance to get an Overload proc which grants https://www.wowhead.com/spell=188196/lightning-bolt, https://www.wowhead.com/spell=51505/lava-burst, https://www.wowhead.com/spell=188443/chain-lightning and https://www.wowhead.com/spell=210714/icefury (if you have the talent) a chance to hit another time at 25% of its power and generate a weaker amount of Maelstrom
Enhancement : 1 point = 0.441% extra Fire, Frost and Nature damage and 0.0179% extra chance for https://www.wowhead.com/spell=201845/stormbringer and https://www.wowhead.com/spell=205648/windfury to proc
Restoration : 1 point = 0.662% effectiveness to your mastery, this scales linearly following this formula : (100-current HP percentage of the target*mastery) and, for example if you had 50% mastery and had 50% health you'd get a 25% healing bonus to your heals
Warlock :
Affliction : 1 point = 0.552% extra damage to https://www.wowhead.com/spell=980/agony, https://www.wowhead.com/spell=172/corruption, https://www.wowhead.com/spell=30108/unstable-affliction, https://www.wowhead.com/spell=27243/seed-of-corruption and https://www.wowhead.com/spell=324536/malefic-rapture
Demonology : 1 point = 0.32% extra damage to your demons
Destruction : 1 point = 0.22% extra damage plus up to 0.22% extra potential damage at random
Warrior :
Arms : 1 point = 0.243% extra damage dealt to targets affected by https://www.wowhead.com/spell=262115/deep-wounds
Fury : 1 point = 0.309% extra damage when Enraged
Protection : 1 point = 0.09 extra chance to block; 0.33% extra chance to "critically block" (for twice the amount) and 0.22% extra attack power
