LoL Patch 25.12: Rammus Rework Headlines Jungle-Centric Update

League of Legends Patch 25.12 is live, and it’s bringing major jungle meta shifts just ahead of MSI 2025 — with a full Rammus rework taking center stage. Following Patch 25.11’s item changes, Riot is now focused on champion balancing to elevate high-skill junglers and keep competitive play fresh.

Alongside Rammus, notable tweaks target champions like Lee Sin, Nidalee, Gwen, and Azir, while Uzi’s Hall of Legends skin collection adds flair to the cosmetics front.

Here’s a full breakdown of what’s coming in Patch 25.12 👇

⚙️ Patch 25.12 Highlights

🐢 Rammus Rework

Rammus receives a major overhaul to make him more than just an anti-auto-attack specialist. His passive is redefined, and his abilities have been rebalanced for improved jungle utility:

• Passive – Spiked Shell:
• ➤ Removed on-hit magic damage
• ➤ Now grants bonus AD equal to 15% of bonus resistances

• Q – Powerball:
• ➤ Damage increased: 80–200 → 80–240
• W – Defensive Ball Curl:
• ➤ Old passive integrated: now deals 10 + 10% total resistances
• ➤ Armor scaling: 35–75% → 35–65%
• ➤ Magic resist scaling: 30–50% → 35–65%
• ➤ Base magic resist: 10 → 27
• ➤ Duration increased to 7 seconds
• ➤ Basic attacks no longer extend duration
• E – Frenzying Taunt:
• ➤ Removed attack speed bonus
• ➤ Now deals 80–160 (+70% AP) to monsters
• R – Soaring Slam:
• ➤ Base damage: 100–250 → 100–350
• ➤ Removed center bonus damage and shockwave damage
• ➤ Slow: 15–20% → 30–60% (refreshed by shockwaves)
• ➤ Cooldown: now 120–90 seconds

🧙 Champion Changes (Select Highlights)

💥 Buffs

• Aatrox:
• ➤ Passive healing increased to 90% post-mitigation
• ➤ E healing ratio improved
• Aurora:
• ➤ Magic resist: 30 → 32
• ➤ R AP scaling: 60% → 70%
• Lee Sin:
• ➤ E cooldown reduced to 8 seconds
• ➤ Improved slow scaling on second cast
• Nidalee:
• ➤ E AP scaling: 40% → 50%
• LeBlanc:
• ➤ E second-hit scaling: 80% → 85%
• ➤ R cooldown reduced
• Jax:
• ➤ Passive AS now scales up to 13.5%
• ➤ R on-hit damage increased
• Twisted Fate:
• ➤ R cooldown reduced
• ➤ E bonus AS increased

🔻 Nerfs

• Ahri:
• ➤ Charm duration reduced
• ➤ R cooldown increased
• Azir:
• ➤ MS: 335 → 330
• ➤ Attack speed growth nerfed
• Gwen:
• ➤ Base health dropped to 600
• ➤ W cooldown increased
• Rumble:
• ➤ Q%HP damage scaling reduced
• ➤ E slow: 15% → 10%
• Kalista:
• ➤ Base HP: 580 → 560
• ➤ Q cooldown: 8s → 9s
• Senna:
• ➤ Ghost spawn rate from minions: 14% → 10%
• Varus:
• ➤ Base armor: 27 → 24
• Vi:
• ➤ W damage scaling reduced
• ➤ E damage buffed but with lower scaling
• Neeko:
• ➤ Q initial damage tweaked
• ➤ W passive on-hit: 40–180 → 30–170
• Taliyah:
• ➤ Base MR: 30 → 28
• ➤ Q empowered hit nerfed
• Yorick:
• ➤ Passive ghoul AS nerfed
• ➤ Q base damage lowered

🔄 Rune & System Adjustments

🌿 Grasp of the Undying (Ranged Nerfs)

• Modifier: 60% → 50%
• Range damage: 2.1% → 1.75% max HP
• Heal: 0.78% → 0.75% max HP
• Bonus HP: 3 → 2.5

🗺️ Atakhan Objective Tuning

• Top lane damage importance increased by 20–25%
• More spawns likely to appear top lane as compensation for solo lane dynamics