First of: I´m form germany so my english is maybe not the best but i wanted to post it on the english board because i thought that more people would see it here.
Keyferos has a new mechanic called "froozen". Its nearly the same like stunned but u are in an icecage that got 2/3/4 Hp based on keyferos level. Basic attacks (from the froozen champ or his airlies) can destroy the cage.
Keyferos gains stacks with basic attacks and abilities just like renekton or gnar up to 100 stacks. If he reaches the 100 he gets better abilitys and 10/15/20 % tenacity.
Throws an projectile that got a very slow missle speed that explodes at the first enemie hit and deals AOE 100/140/180/220/260+0.60 ap magic damage and slow all enemies hit by 20/30/40/50/60 %
With passive: doubled missle speed, now deals 140/180/220/260/300+0.80 ap magic damage and also freezes all enemies hit.
Creates a snowstorm that deals 80/120/160/200/240 + 0.65% ap magic damage over 5 seconds, slow all enemies hit by 40% and denies them vision.
They still can see champions and minions as white silhouettes but enemies and airlies look the same.
With passive: Slows for 70% and reduces attackspeed by 24/28/32/36/40 %
CD: 18/17/16/15/14 sec
Throws anprojectile that deals 90/135/180/225/270+0.50 ap magic damage to all enemies hit and stops at the first champion hit.
With passive: reduces armor and magic resistance by 10/15/20/25/30 % for 4 seconds.
CD: 13/12/11/10/9 sec
After an short delay Keyferos deals in a large arier 200/300/400+0.70Ap magic damage and freezes all champions hit.(Range is like sol or velkoz ult)
For every champion hit he gains 10/15/20 stacks of his passive
CD: 140/105/70 sec
Keyferos can be played as tank in the toplane or on full ap midlane.
Some quickly painted concept-arts:
So thats basicly it. If want me to make some more details (background story, gameplay idea, more detailed splashart) let me now. Also let me know if the english wasnt to bad:P