AP Master Yi, mid

Openingsall within the 475 starting gold

• Doran's Ring400gAbility Power15Health60Mana Regen3 / 5sPassive: Restores 4 Mana upon killing a unit.Basic item — no components.Health Potion35gClick to Consume: Restores 150 Health over 15 seconds. Limited to 5 at one time.Basic item — no components.Mana Potion35gClick to Consume: Restores 100 Mana over 15 seconds.Basic item — no components.Sight Ward75gClick to Consume: Places an invisible ward that reveals the surrounding area for 3 minutes.Basic item — no components.

  Doran's Ring with early sustain and vision — Take this for mid lane so you can trade with Alpha Strike, keep enough mana for another bounce, and still have a ward while you lane.

Corein buy order

• 1Fiendish Codex820g (385g to combine)Ability Power30Fiendish Recall: 10% Cooldown ReductionRecipe

  Fiendish CodexFiendish Codex820g (385g to combine)Ability Power30Fiendish Recall: 10% Cooldown ReductionRecipe820gFiendish Codex starts the Deathfire path and gives early cooldown reduction for more Alpha Strike pressure.

• 2Boots of Speed325gEnhanced Movement: 25 Move SpeedBasic item — no components.

  Boots of SpeedBoots of Speed325gEnhanced Movement: 25 Move SpeedBasic item — no components.325gBoots help you keep lane spacing and move first when Katarina leaves mid.

• 3Needlessly Large Rod1,600gAbility Power80Basic item — no components.

  Needlessly Large RodNeedlessly Large Rod1,600gAbility Power80Basic item — no components.1,600gNeedlessly Large Rod gives the raw AP spike needed before finishing the first major burst item.

• 4Deathfire Grasp3,100g (680g to combine)Ability Power120Cooldown Reduction10%Active: 60s Deals 15% of target champion's maximum Health in magic damage and increases all subsequent magic damage taken by the target by 20% for 4 seconds.Recipe

  Deathfire GraspDeathfire Grasp3,100g (680g to combine)Ability Power120Cooldown Reduction10%Active: 60s Deals 15% of target champion's maximum Health in magic damage and increases all subsequent magic damage taken by the target by 20% for 4 seconds.Recipe3,100gDeathfire Grasp is the first real power item; use it before your magic damage to one-shot targets.

• 5Mejai's Soulstealer1,235g (800g to combine)Ability Power20Soul Capture: Grants 8 Ability Power per stack. Grants 2 stacks for a kill or 1 stack for an assist (max 20 stacks). A third of the stacks are lost upon death. At 20 stacks, grants 15% Cooldown Reduction.Recipe

  Mejai's SoulstealerMejai's Soulstealer1,235g (800g to combine)Ability Power20Soul Capture: Grants 8 Ability Power per stack. Grants 2 stacks for a kill or 1 stack for an assist (max 20 stacks). A third of the stacks are lost upon death. At 20 stacks, grants 15% Cooldown Reduction.Recipe1,235gMejai's is worth it when you are already picking up kills, since old Mejai's keeps enough stacks after death to stay efficient.

• 6Sorcerer's Shoes1,100g (775g to combine)Magic Penetration15Enhanced Movement: 45 Move SpeedRecipe

  Sorcerer's ShoesSorcerer's Shoes1,100g (775g to combine)Magic Penetration15Enhanced Movement: 45 Move SpeedRecipe1,100gSorcerer's Shoes add magic penetration for champion burst, even though they do not help last-hitting.

• 7Sheen1,200g (365g to combine)Ability Power25Mana200Spellblade: After using an ability, the next Basic Attack deals bonus physical damage equal to base Attack Damage On-Hit (2 second cooldown).Recipe

  SheenSheen1,200g (365g to combine)Ability Power25Mana200Spellblade: After using an ability, the next Basic Attack deals bonus physical damage equal to base Attack Damage On-Hit (2 second cooldown).Recipe1,200gSheen gives the mana you badly need and sets up the Lich Bane spike.

• 8Lich Bane3,000g (940g to combine)Ability Power80Mana250Move Speed5%Spellblade of The Arcane: After using an ability, the next Basic Attack deals bonus magic damage On-Hit (2 second cooldown).Recipe

  Lich BaneLich Bane3,000g (940g to combine)Ability Power80Mana250Move Speed5%Spellblade of The Arcane: After using an ability, the next Basic Attack deals bonus magic damage On-Hit (2 second cooldown).Recipe3,000gLich Bane is the second completed item for mana and AP scaling on your post-spell auto attacks.

• 9Rabadon's Deathcap3,300g (840g to combine)Ability Power120Magical Opus: Increases Ability Power by 30%.Recipe

  Rabadon's DeathcapRabadon's Deathcap3,300g (840g to combine)Ability Power120Magical Opus: Increases Ability Power by 30%.Recipe3,300gDeathcap makes the whole AP package hit harder, especially Lich Bane and Alpha Strike.

• 10Void Staff2,295g (1,000g to combine)Ability Power70Touch of the Void: Magic damage ignores 35% of the target's Magic Resist.Recipe

  Void StaffVoid Staff2,295g (1,000g to combine)Ability Power70Touch of the Void: Magic damage ignores 35% of the target's Magic Resist.Recipe2,295gVoid Staff is the next answer once the enemy team has tanks and magic resist.

• 11Nashor's Tooth2,500g (430g to combine)Ability Power65Attack Speed50%Cooldown Reduction20%Recipe

  Nashor's ToothNashor's Tooth2,500g (430g to combine)Ability Power65Attack Speed50%Cooldown Reduction20%Recipe2,500gNashor's Tooth is added late for AP, attack speed, and cooldown reduction to keep spells coming.

Situationalonly when the game asks for it

• Chalice of Harmony880g (120g to combine)Magic Resist25Mana Regen7 / 5sMana Font: Increases Mana Regen by 1% per 1% of missing Mana.Recipe

  Chalice of HarmonyChalice of Harmony880g (120g to combine)Magic Resist25Mana Regen7 / 5sMana Font: Increases Mana Regen by 1% per 1% of missing Mana.Recipe880gConsider Chalice if you really need help sustaining mana in lane.

• Nashor's Tooth2,500g (430g to combine)Ability Power65Attack Speed50%Cooldown Reduction20%Recipe

  Nashor's ToothNashor's Tooth2,500g (430g to combine)Ability Power65Attack Speed50%Cooldown Reduction20%Recipe2,500gAdd Nashor's Tooth late when you want more cooldown reduction and another AP item after the burst core.