LoL PBE 15.1 Datamine Patch Notes: Champion & Item Changes

Looking at the next League patch? You’re in the right place. Thanks to FrankTheBoxMonster’s datamine on Reddit, we’ve got an early look at all the changes coming to patch 15.1. The patch brings some pretty big updates to how the game works – from basic stuff like when minions spawn to completely new boot upgrades.

Here’s the thing about PBE changes – they’re not set in stone. But knowing what’s being tested helps you prepare for what’s coming. I’ve broken down every single change below, from the smallest number tweaks to the biggest system updates. Let’s get into it.

LoL 15.1 Patch PBE Champion Changes

Ashe

• Frost Shot (Passive)
  • Base amplification reduced from 15% to 0%
  • Now triggers on every attack instead of only on slowed targets
• Ranger’s Focus (Q)
  • Attack speed increased: 25/32.5/40/47.5/55% → 25/35/45/55/65%
  • Total AD scaling per attack increased: 105/110/115/120/125% → 110/115/120/125/130%
• Volley (W)
  • Damage changed: 20/35/50/65/80 (+100% total AD) → 60/95/130/165/200 (+100% bonus AD)

Cassiopeia

• Passive
  • Feats of Strength now upgrade her passive movement speed
  • Speed scaling increased from 4-72 linear to 6-108 linear
  • Values are reduced by 30% in Arena mode

Irelia

• Vanguard’s Edge (R)
  • Zone duration reduced: 2.5s → 2.05s

Kalista

• Base Stats
  • Mana per 5 seconds growth increased: 0.4 → 0.8
• Pierce (Q)
  • Base damage reduced: 20/85/150/215/280 → 10/75/140/205/270
  • Mana cost increased: 50/55/60/65/70 → 60/65/70/75/80
• Rend (E)
  • Damage per extra spear adjusted: 8-24 (+25/30/35/40/45% total AD) → 7-35 (+20/25/30/35/40% total AD)

Kha’Zix

• Void Spike (W)
  • Evolved isolated slow increased: 60% → 75%

Twitch

• Venom Cask (W)
  • Slow AP scaling increased: 5% → 6%

Varus

• Base Stats
  • Base mana reduced: 360 → 320
• Piercing Arrow (Q)
  • Mana cost reduced: 65/70/75/80/85 → 50/55/60/65/70
• Blighted Quiver (W)
  • Base on-hit damage adjusted: 8/13/18/23/28 → 6/12/18/24/30
• Hail of Arrows (E)
  • Mana cost increased: 80 → 90

Also Read: League of Legends: How to Get Exalted Arcane Fractured Jinx Skin

LoL 15.1 Patch PBE Item Changes

Tank Items

• Abyssal Mask
  • Passive aura changed: 30% Magic Resistance shred → 12% increased Magic Damage taken
  • No longer unique with other % Magic Penetration items
  • Health increased: 300 → 350
  • Magic Resistance increased: 45 → 50
• Aegis of the Legion
  • Cost reduced: 1200g → 1100g
  • Armor reduced: 30 → 25
  • Magic Resistance reduced: 30 → 25
• Heartsteel
  • Damage adjusted: 80 (+12% bonus HP from items only) → 70 (+6% total HP)
• Unending Despair
  • Recipe changed: Now builds from Aegis of the Legion + Giant’s Belt + 800g
  • Health increased: 350 → 400
  • Armor reduced: 60 → 25
  • Added: +25 Magic Resistance
  • Drain cooldown reduced: 5s → 4s
  • Drain base damage reduced: 30-50 linear → 8-15 linear
• Warmog’s Armor
  • Recipe changed: Now requires two Giant’s Belts
  • Movement speed removed (previously 4%)
  • Out of combat HP healing reduced: 5% → 3%
  • Out of combat HP threshold increased: 1500 → 2000
  • New: 10% increased health from items
• Bloodletter’s Curse (New Item)
  • Cost: 2900g (Haunting Guise + Fiendish Codex + 750g)
  • Stats: 15 Ability Haste, 350 Health, 60 Ability Power
  • Passive: Stacks MR reduction up to 30% over 6s

Boot Upgrades

Requirements Changed:

• Now requires winning Feats of Strength and owning two Legendary items (previously level 15)
• Tier 2 boots receive stat boosts after winning Feats:
  • Plated Steelcaps: +5 Armor
  • Mercury’s Treads: +5 MR
  • Ionian Boots: +5 Ability Haste
  • Boots of Swiftness: +5 Movement Speed
  • Berserker’s Greaves: +5% Attack Speed
  • Sorcerer’s Shoes: +4 Magic Penetration
  • Synchronized Souls: +5 Movement Speed

New Tier 3 Options:

1. Gunmetal Greaves
   • Cost reduced: 2000g → 750g upgrade
   • Movement Speed: 50
   • Attack Speed: 40%
   • New passive: Stacking attack speed on champion hits
2. Chainlaced Crushers
   • 750g upgrade
   • Movement Speed: 50
   • Magic Resistance: 35
   • Tenacity: 30%
   • Shield passive on taking damage
3. Spellslinger’s Shoes
   • 750g upgrade
   • Movement Speed: 50
   • Magic Penetration: 19 flat + 10%
4. Armored Advance
   • 750g upgrade
   • Movement Speed: 50
   • Armor: 40
   • Shield passive against physical damage
5. Forever Forward
   • 750g upgrade
   • Movement Speed: 55
   • Empowered Recall
   • Out of combat movement speed bonuses
6. Crimson Lucidity
   • 750g upgrade
   • Movement Speed: 50
   • Ability Haste: 25
   • Summoner Spell Haste: 10
   • Speed boost on ability usage
7. Swiftmarch
   • 750g upgrade
   • Movement Speed: 75
   • Slow Resist: 10%
   • 4% total movement speed bonus

LoL 15.1 Patch PBE System Changes

Core Game Updates

• Passive gold start time: 1:50 → 1:40
• Homeguard now shows combat disable notification
• Added Atakhan mechanics:
  • Crown of Carnage: 25% increased Epic Monster rewards
  • False Life: Extra gold on takedowns with death prevention
  • Bloody Petals: Team-wide buffs from Blood Roses

New Runes

Sixth Sense (was Zombie Ward)

• Auto-detects nearby hidden wards
• Level 11: 10s ward reveal

Grisly Mementos (was Ghost Poro)

• Collect takedown mementos
• Grants ability/summoner haste

Deep Ward (was Eyeball Collection)

• Extended ward duration in enemy jungle
• Level 9: Includes river

Axiom Arcanist (was Nullifying Orb)

• +14% ultimate effects
• +9% AoE damage
• CDR on takedowns

Turret Changes

• Damage reduction: 85% → 50%
• Damage ramp per stack: 40% → 50%
• Stack duration: 3s → 5s

Minion Updates

• Structure/Champion damage: 50% → 55%
• New current health damage system for minion combat:
  • Melee: 2%
  • Ranged: 4%
  • Siege: 6%
• First siege minion: 3rd wave → 4th wave
• Experience radius: 1400 → 1500

Minion Stat Adjustments:

• Melee Minions:
  • HP: 465-1500 by 48 minutes
  • AD: 11-80 by 42 minutes
  • Armor: 0-20 by 42 minutes
• Ranged Minions:
  • HP: 284-600 by 55 minutes
  • AD: 21-125 by 45 minutes
• Siege Minions:
  • HP: 835-5,850 over 90 minutes
  • AD: 37.5-126 over 90 minutes
• Super Minions:
  • HP: 1,600-7,500 over 90 minutes
  • AD: 215-510 over 90 minutes

After going through all these changes, it’s clear that patch 15.1 is going to shift how League feels to play. The minion changes will affect your early game farming, and those new boot upgrades give you more options for how you want to build your champion. The new runes also open up different strategies for vision control and ultimate usage.

If you’re playing on live servers right now, use this time to get familiar with the current minion behavior and item builds. When these changes hit, you’ll notice the differences right away, especially in how waves push and how quickly you can take towers.

Keep in mind that what you’re reading comes from PBE data, so some numbers might change before the patch goes live. If you want to stay updated, keep an eye on the PBE over the next few weeks.