[Rework Concept] Lissandra, the Frost Witch

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Passive - Cauldron of Black Ice: While out of combat Lissandra can click on her champion portrait and target an area. She channels for a few seconds before summoning a Cauldron of Black Ice, which acts as terrain. The Cauldron corrupts the ground around it with Black Ice. The Cauldron can be attacked and destroyed by a couple attacks from an enemy champion or a single attack from an enemy turret. Lissandra can only have 1 Cauldron active at a time. if Lissandra roots an enemy champion, the Cauldron's health is restored.

• Drink from the Black Ice: Once every 30-15 seconds, Lissandra, or her allied champion nearest to the Cauldron, can cast their next ability at no cost. The cooldown of this ability is reduced by 1 second whenever an enemy champion is effected by a crowed control effect near the Cauldron.

Q - Shattering of Black Ice: Lissandra hurls a large shard of black ice in a target direction, slowing and dealing magic damage to the first enemy, then shattering, slowing and dealing magic damage in a cone behind the first enemy unit.

• If the shard of black ice hits a frozen solid unit, the unit explodes, dealing magic damage and stunning all enemy units around it. Any units that are killed by the explosion then become frozen solid, and act as terrain, which lasts for several seconds. If the shard of black ice hits the Cauldron, it also creates an explosion, but does not destroy the Cauldron.

W - Ring of Frost: Lissandra freezes the ground around her, dealing magic damage and briefly rooting all enemies hit. The ground is then corrupted by Black Ice for several seconds. Enemies killed by Ring of Frost become frozen solid, and act as terrain, which lasts for several seconds.

E - Glacial Path - Passive: Lissandra gains bonus movement speed while on Black Ice. While on Black Ice, she deal on hit magic damage with her basic attacks.

• Glacial Wrath - First Cast: Lissandra casts a claw of ice that moves forward in a line, dealing magic damage to all enemies it passes through.

• Second Cast: Glacial Wrath consumes the claw and blinks Lissandra to its current location. Lissanda creates a duplicate of herself that acts as a frozen solid unit where she was before blinking, which lasts for several seconds and acts as terrain.

R - Frozen Tomb: Lissandra instantly entombs herself, placing herself in stasis for 2.5 seconds while healing herself over the duration. The ground around Lissandra becomes corrupted by Black Ice for 3 seconds, and all of the Black Ice begins to deal magic damage and greatly slows to all enemies for the next 3 seconds. Any unit killed within the 3 seconds on Black Ice will become frozen solid. After, the Black Ice is destroyed.

• Frozen Throne: Any near by Frozen units, or any units that become frozen solid while Lissandra is stasised, are reanimated when Lissandra breaks out of her stasis, becoming frozen thralls under the command of Lissandra. They can be controlled as pets by recasting this ability, and have the same stats from before they were frozen, with capped health, including enemy minions, enemy champions, or any jungle creature, excluding Baron.