Martis (Champion Idea)

Lore: Being one of the greatest warriors under Renekton's command he was always eager but never strong enough to overcome him. Defeated in the last battle before Renekton's asсension and buried as a great fighter he was then revived by corrupted sun disc power during Xerath's ascension. Brought back to life, if that way of existing may be called living, he now looks for a chance to bring their rivalry with Renekton to an end.

Appearance: A Nasus/Renekton type of ascended, but based on lizards. Wields two sickles.

Passive: Lizard agility Attacking an enemy grants Marits 10% bonus movement speed for 1.5 seconds, increased to 15% when moving towards enemy championss.

Q: Frantic slash (16/14/12/10/8 sec cooldown) Improves your next two attacks. The first attack deals 80/90/100/110/120% damage in a cone in front of Martis and silences enemies for 1 second, the second one deals the same damage in a circle around him and makes enemy champions brittle for 3 seconds.

W: Fortifying strikes (Passive) Basic attacks apply a stacking buff to Martis. Every stack grants 2/3/4/5/6(+0.02 total armor)(+0.02 total magic resist) armor and magic resistance. Reaching 6 stacks heals for 10/12/14/16/18% of max hp and knocks up nearby enemies for 0.75 second. Stack duration is 5 seconds. Lose 1 stack per second out of combat.

E: Crippling dash (20/19/18/17/16 sec cooldown) Dash for 450 units, damaging the first enemy champion hit for 60/90/120/150/180(+0.03 bonus hp), applying grevious wounds for 4 seconds and slowing them for 30% for 2.5 seconds. When slow ends deals physical damage equal to 15% of the damage that target has taken from Martis's allies during slow.

R: Sacrificial stab (150/120/90 sec cooldown) Deal 110/230/350(+0.35 bonus armor)(+0.35 bonus magic resist) magic damage to an enemy champion linking nearby enemies including the target to it's position. If links are not broken after 3 seconds, pull linked enemies towards the linking position and deal 30/35/40% of initial damage to them.

I'd like to know what you think about it. Most numbers are randomly thought out to be somewhat about real, don't look for power balance in it.