Stats

Armor, magic resist, mana and attack speed are the same at every star level.

Silco

1 star: Throw a vial the closest surrounded enemy, covering nearby hexes in chemicals for 6 seconds. Deal 65 magic damage per second to chemical-affected enemies, and heal affected allies for 20 per second. When possible, target unaffected groups.
2 star: Throw a vial the closest surrounded enemy, covering nearby hexes in chemicals for 6 seconds. Deal 100 magic damage per second to chemical-affected enemies, and heal affected allies for 25 per second. When possible, target unaffected groups.
3 star: Throw a vial the closest surrounded enemy, covering nearby hexes in chemicals for 10 seconds. Deal 400 magic damage per second to chemical-affected enemies, and heal affected allies for 120 per second. When possible, target unaffected groups.

3 patches changed Silco, read out of Riot’s game files.

Patch 13.22Nov 2023
- Mana4530
- Shimmer damage per sec85 / 125 / 42565 / 100 / 4001★ / 2★ / 3★
- Heal per sec20 / 30 / 12020 / 25 / 1201★ / 2★ / 3★
Patch 13.21Oct 2023
- Mana5045
- Shimmer damage per sec75 / 115 / 42585 / 125 / 4251★ / 2★ / 3★
Patch 13.19Sept 2023
- Shimmer damage per sec80 / 120 / 42575 / 115 / 4251★ / 2★ / 3★
- Undercity Tactics rewritten
  Before
  Throw a vial at a nearby enemy, covering adjacent hexes in shimmer for 6 seconds. Enemies affected by shimmer take 120 magic damage per second. Allies affected by shimmer heal 30 Health per second.
  After
  Throw a vial the closest surrounded enemy, covering nearby hexes in chemicals for 6 seconds. Deal 115 magic damage per second to chemical-affected enemies, and heal affected allies for 30 per second. When possible, target unaffected groups.