[Champion Concept] Ahu, The Totem Keeper (mechanically difficult "tank")
The idea of this guy is to have a champ that does the job of a tank but is also mechanically difficult, inspired by this post.
Ahu would look like a older man who has a torso sized Easter Island head hanging from a rope around his neck and supported by both hands. Couldn't find a picture for that amazingly enough.
Mage/Tank
>Health: 580-2110 (+90) HP5: 6.505-16.7 (+.6) Mana: 310-1160 (+50) MP5: 6-19.6 (+.8) AD: 60-111 (+3) Attack Speed: .638-.833 (+1.8%) Armor: 25.4-90 (+3.8) Magic Resist: 32.1-53.4 (+1.25) Range: Melee (125) Move Speed: 335
Passive: >Ancestral Power: Ahu takes 15% less damage from directions where he has a totem. Totems: Totems are treated as terrain and are 100 units radius [I think, want them to be a bit smaller than a Trundle pillar] and knock champions out of its spawn zone [.5 second knock back]. They have health equal to 40% Your Health + 100% AP and Armor equal to 30+20% AP+80% Bonus Armor and MR equal to 30+20% AP+80% Bonus MR. They would look similar to Easter Island heads, with each type of totem having some distinct features.
Q: >Vengeful Father (Range: 500, Cost: 70, Cooldown: 12/11/10/9/8): Summons a red, frowning totem that creates a tether to Ahu and any other totem within 800 units and lasts 5 seconds. Every .5 seconds the totem checks for new totems and its tethers pulse dealing 8/16/24/32/40+10% AP magic damage to all enemies within 75 units of the tethers and 175 units of one of the totems or Ahu. Overlapping pulses increase the damage by 50%.
W: >Caring Mother (Range: 500, Cost: 90/100/110/120/130, Cooldown: 18/17/16/15/14): Summons a green, smiling totem that sends out a aura that extends 400 units from it and 200 units from any totem within the original aura. The totem lasts 8 seconds and heals Ahu every .5 seconds for 5/10/15/20/25+6% AP and grants him 10/15/20/25/30+10% AP as Base Armor and Base MR. Allies heal at 30% effectiveness.
E: >Defiant Elders (Range: 600, Cost: 60, Cooldown: 9/8/7/6/5): Summons a gray, hunched totem that lasts 6 seconds, has 25% regular health, a 75 unit radius and that acts as a minion for colliding skill shots. Any projectiles that pass through it do 50% of their damage to it, in addition to any they would normally do to it, and deal only 50% damage to later targets. Upon death or when the totem expires it explodes dealing magic damage equal to 20/30/40/50/60% of their missing health to all enemies within 200 range.
R: >Circle of Ancestors (Cost: 100, Cooldown: 150/130/120): Ahu channels for 2/3/4 seconds all totems show an aura around them for that duration. During the channel, and for .5 seconds after, all damage dealt to allied champions within 600 units of a totem is distributed evenly among those champions and totems.
I expect him to be built like a tanky mage, probably similarly to a mid lane Annie. I think he would probably spend his time in top lane, but I could also see him as a support, jungler or low damage mid laner.
His mechanical difficulty would come from placement of his totems and playing around them once they are down.
