Offense Mastery Tree
(2013)
Summoner's Wrath: Exhaust lowers target's MR/Armor by 10; Ignite gives +5 AD/AP when on cooldown; Ghost now grants 35% movement speed; Garrison now grants 50% splash damage to allied towers.Fury: Grants 1 / 2 / 3 / 4 % attack speed.Sorcery: Grants 1 / 2 / 3 / 4 % cooldown reduction.Butcher: Basic attacks deal 2 / 4 bonus damage to minions and monsters.Deadliness: Grants 3 / 6 / 9 / 12 AD at level 18 (.17 AD per rank per level)Blast: Grants 4.5 / 9 / 13.5 / 18 AP at level 18 (.25 AP per rank per level)Destruction: Increases damage to turrets by 5 %.Havoc: Increases damage by 0.67 / 1.33 / 2 %.Weapon Expertise: Grants 8% armor pen.Arcane Knowledge: Grants 8% magic pen.Lethality: Grants 2.5 / 5 % critical strike damage (doubled on melee champions).Brute Force: Grants 1.5 / 3 attack damage.Mental Force: Grants 2 / 4 / 6 ability power.Spellsword: Your basic attacks deal bonus magic damage equal to 5% of your ability power.Frenzy: Grants 10% attack speed for 2 seconds after landing a critical strike.Sunder: Grants 2 / 3.5 / 5 armor pen.Archmage: Grants 1.25 / 2.5 / 3.75 / 5% increased ability power.Executioner: Increases damage by 5% against targets below 50% health (excluding true damage).Season 3 Offense
Other Mastery Trees:
Defense Mastery profileicon DefenseUtility Mastery profileicon Utility
Arcane Knowledge mastery 2013

Arcane Knowledge was a tier 3 Offense mastery with 1 rank.


Effect per Rank

Requirements

  • Requires 8 points in Offense.
  • Requires 4 points in Blast mastery 2013.png Blast.


Patch History

V3.14
  • Removed due to Season 2014.
V1.0.0.152

Offense Mastery Tree
(2012)
Summoner's Wrath (Season 2012 Mastery)Brute Force (Season 2012 Mastery)Mental Force (Season 2012 Mastery)Butcher (Season 2012 Mastery)Alacrity (Season 2012 Mastery)Sorcery (Season 2012 Mastery)Demolitionist (Season 2012 Mastery)Deadliness (Season 2012 Mastery)Weapon Expertise (Season 2012 Mastery)Arcane Knowledge (Season 2012 Mastery)Havoc (Season 2012 Mastery)Lethality (Season 2012 Mastery)Vampirism (Season 2012 Mastery)Blast (Season 2012 Mastery)Sunder (Season 2012 Mastery)Archmage (Season 2012 Mastery)Executioner (Season 2012 Mastery)Season 2 Offense
Other Mastery Trees:
Defense Mastery profileicon DefenseUtility Mastery profileicon Utility
Arcane Knowledge mastery 2012

Arcane Knowledge was a tier 3 Offense mastery with 1 rank.


Effect per Rank

Requirements

  • Requires 8 points in Offense.
  • Requires 4 points in Sorcery mastery 2012.png Sorcery.

Strategy

  • Arcane Knowledge is very useful to champions who focus on dealing magic damage, but keep in mind that percent magic penetration factors in after percentage magic resist reduction, flat magic resistance reduction, and flat magic penetration.


Patch History

V1.0.0.152
  • Removed due to Season 2013.
V1.0.0.129