Mark

I like the concept, but it's the new meta for every melee champ and in my experience about 75% of casters. I suggest a longer cooldown. maybe a 5 or 10 second increase. A landed snowball is almost a " teed" team fight initiate, (and makes snowballing Katarina, snowball, a lot easier, which is easy to begin with.) Which makes a short game even shorter.

Plus only like a fifth of marks used are followed up by a teamfight. Mostly used by assassins to do their job anyways.

TL;DR Katarina nerf reference

Just thought I would share. Happy LoL'ing!~~