An idea on remaking Lissandra's passive
I was reading Lissandra lore one dark and dreary night after a string of ranked losses and thought,"Since she wants the whole world to turn to ice why couldn't something like this be her passive?"
Iceborn: Lissandra spells leaves Black Ice in the spell's path for 3 seconds and causes enemy champions hit and neutral monsters to also leave a trail of Black Ice for 3 seconds. Black Ice allows Lissandra to activate her Glacial Path to blink anywhere the Black Ice is. This blink shares it's cooldown with Glacial Path's current cooldown and the blink cannot be activated if Glacial Path is already on cooldown. Additionally all champions, friend or foe, other than Lissandra traveling over Black Ice will be slowed by 5%/10%/15% (levels 1/7/13) for 1.5 seconds. This would also exclude the enemy with the Black Ice debuff because the trail is being formed behind that champion. Iceborn has a cooldown of 10 seconds, lowered by one second each time Lissandra applies crowd control, excluding crowd control spell effects from items or from Iceborn.
Of course the numbers are just there as place holders and can be changed but I wanted some numbers in there to help form the idea.