[Champion Concept] Lasa The Oilbeast (Early draft)

note this concept follow the theme of a champion concept I posted for a long time ago on EUW forum. (Old name was Lasa The Oil Monster), more will most likely come soon

Role

Mage, tank

Abilities

Passive: Drenched in Oil

Lasa's abilities apply up to 8 stacks of Oil on their targets. Each stack slows the target by 5%. When no oil stacks have been applied for 1 second, the target loses an oil stack every 0,5 seconds. Basic attacks apply one stack of Oil.

In addition some of Lasa's abilities leaves an oil pool. When standing on oil enemies are inflicted with a stack of oil every 0,5 seconds.

Q: Oil smash

Cost: 4% current health Cooldown: 14 / 13 / 12 / 11 / 10 seconds

Lasa next basic attack will smash the target with oil, dealing 60 / 90 / 120 / 150 / 180 (+50% AP) bonus damage and applying 4 stacks of oil (total). Every stack applied above the 8th will root the target in place for 0,75 seconds and increase the bonus damage by 25%.

_Clarification: if the target have 8 stacks currently on them they will be rooted for 3 seconds and take 100% bonus damage from this attack. _

W: Crude Rush

Cost: 6% current health Cooldown: 22 / 21 / 20 / 19 / 18 seconds

Passive: Whenever Lasa take direct damage she will drop an oil pool with a 250 / 275 / 300 / 325 / 350 radius at her feet that last 4 seconds. This ability have a 2 second cooldown.

Active: Lasa channels for 1 second before dashing in targeted direction, dealing 80 / 120 / 160 / 200 / 240 (+70% AP) magical damage to everything she pass through and instantly apply one stack of oil. Additionally she leaves a trail of oil that last for 4 seconds.

E: Oil Toss

Cost: 4% max health Cooldown: 14 / 13 / 12 / 11 / 10 seconds

Lasa lob a ball of oil to the targeted location. I deals 60 / 100 / 140 / 180 / 220 (+50% AP) to all enemies and instantly apply a stack of oil. Enemies in the center take 50% bonus damage and apply 2 stacks instead. In addition it leaves a pool of oil in the area for 4 seconds.

Ultimate: Self Combustion

Cost: 20% current health per second Cooldown: 32 / 28 / 24 seconds

Lasa make herself burst into flames for 4 seconds, dealing 20 / 25 / 30 (+5% AP) magical damage to all nearby enemies every 0,5 seconds. Any oil that comes close to Lasa gets ignited and the flames spread to any nearby oil pool. When a character afflicted with oil gets ignited one oil stack will be consumes every 0,5 seconds to deal 20 / 25 / 30 (+5% AP) and ignited oil pools deals the same damage every 0,5 seconds without applying any oil stacks to target. All the damage can overlap.