Cassiopeia Patch History
Every buff and nerf, with the numbers, 3.8 to 26.16
Cassiopeia has been touched in 38 of the 305 patches tracked here, across 112 individual values: 56 moved in their favour, 53 against. Most recent change: patch 26.13.
38Patches touched
112Values changed
56Buffed
53Nerfed
26.13Last change
The abilities Riot keeps touching
StatsBase stats
Health, attack damage, armour, magic resist, movement speed, attack range and their per-level growth.
STATS
Base stats
19 changed10▲ 9▼
PSerpentine Grace
Cassiopeia gains Movement Speed per level, but she cannot purchase Boots items.
P
Serpentine Grace
0 changed0▲ 0▼
QNoxious Blast
Cassiopeia blasts an area with Poison after a brief delay, granting her increased Movement Speed if she hits an enemy champion.
Q
Noxious Blast
23 changed10▲ 11▼
WMiasma
Cassiopeia releases several clouds of poison, slowing, grounding, and lightly damaging enemies that pass through them. Grounded enemies cannot use Movement abilities.
W
Miasma
28 changed10▲ 18▼
ETwin Fang
Cassiopeia lets loose an attack that deals increased damage to Poisoned targets and heals her for a percentage of the damage dealt. If the target dies from this attack, Cassiopeia regains Mana.
E
Twin Fang
33 changed20▲ 12▼
RPetrifying Gaze
Cassiopeia releases a swirl of magical energy from her eyes, stunning any enemies in front of her that are facing her and slowing any others with their back turned.
R
Petrifying Gaze
9 changed6▲ 3▼
The kit this replaced
Reworked in patch 6.9. Icons are the originals, still served by Data Dragon at version 4.16.1.
P
Aspect of the Serpent
Q
Noxious Blast
W
Miasma
E
Twin Fang
R
Petrifying Gaze
Every change, newest first
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| HP per level | 104 | → | ▼ 98 6% |
Patch 26.7buffMarch 31, 2026
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| E | Bonus Damage | 20/43/66/89/112 | → | ▲ 20/45/70/95/120 6% |
Patch 26.1buffJanuary 7, 2026
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| Move speed | 328 | → | ▲ 335 2% |
Patch 25.18buffSeptember 9, 2025
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| E | Bonus Damage | 20/40/60/80/100 | → | ▲ 20/43/66/89/112 10% |
Patch 25.3nerf
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| Q | Tooltip Total Damage Coefficient | 0.7 | → | ▼ 0.65 7% | |
| W | Damage Per Second Coefficient | 0.15 | → | ▼ 0.1 33% |
Patch 14.15buffJuly 30, 2024
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| Q | Cost | 50/60/70/80/90/100 | → | ▲ 50/55/60/65/70/70 18% | |
| Q | Tooltip Total Damage Coefficient | 0.9 | → | ▼ 0.7 22% | |
| E | Bonus AP Ratio | 0.6/0.6/0.6/0.6/0.6 | → | ▼ 0.55/0.55/0.55/0.55/0.55 8% | |
| E | Cost | 50/48/46/44/42/40 | → | ▲ 40/40/40/40/40/40 11% |
Patch 12.10nerf
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| Armor per level Class-wide | 3.5 | → | ▲ 4.7 34% | ||
| Base HP Class-wide | 560 | → | ▲ 630 12% | ||
| HP per level Class-wide | 90 | → | ▲ 104 16% | ||
| MR per level Class-wide | 0.5 | → | ▲ 1.3 160% | ||
| E | Heal Ratio | 0.12/0.14/0.16/0.18/0.2 | → | ▼ 0.1/0.115/0.13/0.145/0.16 19% |
Patch 11.23tweak
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| W | Cast range | 25000/25000/25000/25000/25000 | → | ▼ 750/750/750/750/750 97% | |
| W | Cooldown | 24/22/20/18/16 | → | ▼ 130/120/110/10/10 280% | |
| W | Cost | 70/80/90/100/110/120 | → | ▲ 120/160/200/0/0/40 9% | |
| W | Effect 2 | 40/50/60/70/80 | → | ▼ 60/60/60/0/0 40% | |
| W | Effect 3 | 1/1/1/1/1 | → | ▲ 2/2/2/2/2 100% |
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| E | Bous Poisoned Damage | 10/30/50/70/90 | → | ▲ 20/40/60/80/100 20% |
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| E | Cost | 50/50/50/50/50/50 | → | ▲ 50/48/46/44/42/40 10% |
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| W | Effect 1 | 20/25/30/35/40 | → | ▲ 200/325/450/0/0 |
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| Base MR | 34 | → | ▼ 32 6% |
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| Base HP Class-wide | 575 | → | ▼ 560 3% | ||
| Base MR | 30 | → | ▲ 34 13% | ||
| Base armor | 20 | → | ▼ 18 10% |
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| Base HP | 537 | → | ▲ 575 7% | ||
| Base armor | 25 | → | ▼ 20 20% | ||
| HP per level | 87 | → | ▲ 90 3% | ||
| W | Cooldown | 18/17.5/17/16.5/16 | → | ▼ 24/22/20/18/16 18% | |
| E | Cost | 40/45/50/55/60/65 | → | ▲ 50/50/50/50/50/50 5% |
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| R | Effect 1 | 250/350/0 | → | ▲ 325/450/0 29% | |
| R | Effect 2 | 40/40/0 | → | ▲ 60/60/0 50% |
Show the earlier 28 patches, back to V1.0.0.108
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| E | Cost | 40/50/60/70/80/90 | → | ▲ 40/45/50/55/60/65 19% |
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| Q | Effect 1 | 75/120/165/210/255 | → | ▼ 75/110/145/180/215 12% | |
| W | Cost | 70/70/70/70/70/70 | → | ▼ 70/80/90/100/110/120 36% | |
| W | Effect 1 | 20/30/40/50/60 | → | ▼ 20/25/30/35/40 25% |
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| W | Cooldown | 18/17/16/15/14 | → | ▼ 18/17.5/17/16.5/16 6% | |
| W | Effect 1 | 20/35/50/65/80 | → | ▼ 20/30/40/50/60 20% |
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| Q | Cost | 50/55/60/65/70/70 | → | ▼ 50/60/70/80/90/100 22% | |
| Q | Effect 1 | 75/125/175/225/275 | → | ▼ 75/120/165/210/255 6% |
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| Q | Effect 1 | 75/120/165/210/255 | → | ▲ 75/125/175/225/275 6% |
Patch 8.2January 23, 2018 · Read the 8.2 notes
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| HP regen Class-wide | 5.5 | → | ▼ 1.1 80% |
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| Q | Cost | 60/65/70/75/80 | → | ▲ 50/55/60/65/70 14% | |
| E | Ratio a2 | 0.5 | → | ▲ 0.6 20% |
Patch 7.22
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| Base HP Class-wide | 525 | → | ▲ 537 2% | ||
| HP per level Class-wide | 75 | → | ▲ 87 16% |
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| E | Effect 1 | 15/40/65/90/115 | → | ▼ 10/30/50/70/90 23% | |
| E | Ratio a2 | 0.4 | → | ▲ 0.5 25% |
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| Base mana | 375 | → | ▼ 334 11% | ||
| E | Effect 1 | 10/40/70/100/130 | → | ▼ 15/40/65/90/115 7% | |
| E | Ratio a2 | 0.35 | → | ▲ 0.4 14% |
Patch 7.9May 2, 2017 · Read the 7.9 notes
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| MR per level Class-wide | 0 | → | ▲ 0.5 |
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| W | Cast range | 900/900/900/900/900 | → | ▼ 800/800/800/800/800 11% |
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| Q | Cast range | 750/750/750/750/750 | → | ▲ 850/850/850/850/850 13% |
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| W | Cast range | 800/800/800/800/800 | → | ▲ 900/900/900/900/900 12% | |
| W | Cooldown | 22/20/18/16/14 | → | ▲ 18/17/16/15/14 11% | |
| E | Cast range | 550/550/550/550/550 | → | ▲ 700/700/700/700/700 27% | |
| E | Cooldown | 0.9/0.9/0.9/0.9/0.9 | → | ▲ 0.75/0.75/0.75/0.75/0.75 17% | |
| E | Cost | 60/65/70/75/80 | → | ▲ 40/50/60/70/80 14% |
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| AD per level | 3.2 | → | ▼ 3 6% | ||
| Armor per level | 4 | → | ▼ 3.5 12% | ||
| Base AD | 52.376 | → | ▲ 53 1% | ||
| Base HP | 506 | → | ▲ 525 4% | ||
| Base armor | 22.22 | → | ▲ 25 13% | ||
| Base mana | 370.8 | → | ▲ 375 1% | ||
| HP regen | 5.69 | → | ▼ 5.5 3% | ||
| Move speed | 335 | → | ▼ 328 2% | ||
| Q | Cast range | 850/850/850/850/850 | → | ▼ 750/750/750/750/750 12% | |
| Q | Cooldown | 4/4/4/4/4 | → | ▲ 3.5/3.5/3.5/3.5/3.5 12% | |
| Q | Cost | 40/50/60/70/80 | → | ▼ 60/65/70/75/80 17% | |
| Q | Effect 1 | 75/115/155/195/235 | → | ▲ 75/120/165/210/255 6% | |
| Q | Effect 2 | 20/20/20/20/20 | → | ▼ 3/3/3/3/3 85% | |
| Q | Effect 3 | 3/3/3/3/3 | → | ▲ 30/35/40/45/50 | |
| Q | Ratio a1 | 0.45 | → | ▲ 0.7 56% | |
| W | Cast range | 850/850/850/850/850 | → | ▼ 800/800/800/800/800 6% | |
| W | Cooldown | 14/13/12/11/10 | → | ▼ 22/20/18/16/14 50% | |
| W | Cost | 40/50/60/70/80 | → | ▼ 70/70/70/70/70 17% | |
| W | Effect 1 | 10/15/20/25/30 | → | ▲ 20/35/50/65/80 150% | |
| W | Effect 2 | 25/30/35/40/45 | → | ▲ 40/50/60/70/80 71% | |
| W | Effect 3 | 2/2/2/2/2 | → | ▼ 1/1/1/1/1 50% | |
| W | Effect 4 | 7/7/7/7/7 | → | ▼ 5/5/5/5/5 29% | |
| W | Ratio a1 | 0.1 | → | ▲ 0.15 50% | |
| E | Cast range | 700/700/700/700/700 | → | ▼ 550/550/550/550/550 21% | |
| E | Cooldown | 5/5/5/5/5 | → | ▲ 0.9/0.9/0.9/0.9/0.9 82% | |
| E | Cost | 50/60/70/80/90 | → | ● 60/65/70/75/80 0% | |
| E | Effect 1 | 55/80/105/130/155 | → | ▼ 10/40/70/100/130 33% | |
| E | Effect 2 | 0.4/0.45/0.5/0.55/0.6 | → | ▲ 5/10/15/20/25 | |
| E | Effect 3 | 30/45/60/75/90 | → | ▼ 0.1/0.1/0.1/0.1/0.1 100% | |
| R | Cooldown | 120/110/100 | → | ▲ 120/100/80 9% | |
| R | Effect 2 | 60/60/60 | → | ▼ 40/40/40 33% |
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| E | Effect 10 | 3/3/3/3/3 | → | ▼ 1.5/1.5/1.5/1.5/1.5 50% | |
| E | Effect 8 | 0.1/0.1/0.1/0.1/0.1 | → | ▼ 0.06/0.06/0.06/0.06/0.06 40% |
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| Q | Cost | 40/45/50/55/60 | → | ▼ 40/50/60/70/80 20% | |
| E | Cost | 35/45/55/65/75 | → | ▼ 50/60/70/80/90 27% |
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| Base AD | 50.376 | → | ▲ 52.376 4% | ||
| Q | Effect 2 | 10/15/20/25/30 | → | ● 20/20/20/20/20 0% | |
| E | Cost | 30/45/60/75/90 | → | ▲ 35/45/55/65/75 8% | |
| E | Effect 4 | 0.55/0.55/0.55/0.55/0.55 | → | ▲ 20/20/20/20/20 | |
| E | Effect 9 | 0.03/0.03/0.03/0.03/0.03 | → | ▲ 5/5/5/5/5 |
Patch 4.20November 19, 2014 · Read the 4.20 notes
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| Base AD Class-wide | 47 | → | ▲ 50.376 7% | ||
| Base HP Class-wide | 380 | → | ▲ 506 33% | ||
| Base armor Class-wide | 15.5 | → | ▲ 22.22 43% | ||
| Base mana Class-wide | 270 | → | ▲ 370.8 37% | ||
| HP regen Class-wide | 4.85 | → | ▲ 5.69 17% |
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| Base mana | 250 | → | ▲ 270 8% | ||
| Q | Ratio a1 | 0.35 | → | ▲ 0.45 29% |
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| Q | Cooldown | 3/3/3/3/3 | → | ▼ 4/4/4/4/4 33% | |
| Q | Cost | 35/45/55/65/75 | → | ▲ 40/45/50/55/60 9% | |
| Q | Effect 2 | 15/17.5/20/22.5/25 | → | ● 10/15/20/25/30 0% | |
| Q | Ratio a1 | 0.8 | → | ▼ 0.35 56% | |
| W | Cooldown | 9/9/9/9/9 | → | ▼ 14/13/12/11/10 33% | |
| W | Cost | 70/80/90/100/110 | → | ▲ 40/50/60/70/80 33% | |
| W | Effect 1 | 25/35/45/55/65 | → | ▼ 10/15/20/25/30 56% | |
| W | Effect 2 | 15/20/25/30/35 | → | ▲ 25/30/35/40/45 40% | |
| W | Ratio a1 | 0.15 | → | ▼ 0.1 33% | |
| E | Cost | 50/60/70/80/90 | → | ▲ 30/45/60/75/90 14% | |
| E | Effect 1 | 50/85/120/155/190 | → | ▼ 55/80/105/130/155 12% | |
| E | Effect 2 | 15/17.5/20/22.5/25 | → | ▼ 0.4/0.45/0.5/0.55/0.6 98% | |
| E | Effect 3 | 0.5/0.5/0.5/0.5/0.5 | → | ▲ 30/45/60/75/90 | |
| R | Cooldown | 130/120/110 | → | ▲ 120/110/100 8% | |
| R | Effect 1 | 200/325/450 | → | ▼ 150/250/350 23% | |
| R | Ratio a1 | 0.6 | → | ▼ 0.5 17% |
Patch 4.5April 6, 2014 · Read the 4.5 notes
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| Base armor Class-wide | 11.5 | → | ▲ 15.5 35% |
| Ability | What changed | Before | After | Since 6.9 rework | |
|---|---|---|---|---|---|
| R | Cast range | 750/750/750 | → | ▲ 825/825/825 10% | |
| R | Cost | 120/160/200 | → | ▲ 100/100/100 38% |
Data Dragon’s archive begins at patch 3.8; everything older comes from the community-written League of Legends Wiki (CC BY-SA 3.0). Only the numbers are reproduced here — for the wording of non-numeric changes, follow the link.
V1.0.0.152Wiki
| Ability | What changed | Before | After | |
|---|---|---|---|---|
| Stats | Movement speed | 310 | → | ▲ 335 |
V1.0.0.134Wiki
| Ability | What changed | Before | After | |
|---|---|---|---|---|
| Noxious Blast | Ability power ratio | (+ 90% AP) | → | ▼ (+ 80% AP) |
| Twin Fang | Base damage | 60/95/130/165/200 | → | ▼ 50/85/120/155/190 |
V1.0.0.115Wiki
| Ability | What changed | Before | After | |
|---|---|---|---|---|
| Petrifying Gaze | Base damage | 150/275/400 | → | ▲ 200/325/450 |
| Petrifying Gaze | Range | 700 (effect now roughly matches the particle) | → | ▲ 850 |
V1.0.0.110Wiki
| Ability | What changed | Before | After | |
|---|---|---|---|---|
| Twin Fang | Range | 675 | → | ▲ 700 |
V1.0.0.108Wiki
| Ability | What changed | Before | After | |
|---|---|---|---|---|
| Stats | Movement speed | 305 | → | ▲ 310 |
| Noxious Blast | Movement speed buff duration | 2 | → | ▲ 3 seconds |
| Twin Fang | Ability power ratio | (+ 45% AP) | → | ▲ (+ 55% AP) |
| Petrifying Gaze | Slow | 40/50/60% | → | ▲ 60% at all ranks |
| Petrifying Gaze | Cooldown | 120 at all ranks | → | ● 130/120/110 seconds |