Rabo, The Last Druid [Versitile Champion Concept]
Basically, I created a champion that could wildly change based on the flow of the game. The effectiveness of each form really depends on the build, for example, using his Grass Golem when entirely build for support won't be as effective as using the River golem.
http://media-dominaria.cursecdn.com/attachments/140/170/635704128072150801.jpg
Champion: Rabo, The Last Druid
Lane: Jungle/Mid/Bot
Role: Mage/Tank
Lore: Before men erected stone buildings, before they laid claim to the land, the druids roamed the natural forests in nomadic tribes. As time marched forward and the land was measured and tamed, the druids slowly found their nomadic ways coming to an end. Rabo was a young boy when the last of his tribe split off to join the world, for centuries it was only him and the staff of his father. The first night alone, Rabo felt lonesome for the first time. He held the staff close, feeling the wood pulse before the roots and earth near him formed into a Golem. Directing the Golem came as naturally as breathing to him and this afforded him the skill to survive in the true wilds. Centuries past and Rabo grew into a wise man, staff and Golem ever by his side. Upon hearing of the League of Legends from an interesting elemental (Zyra), Rabo decided to enter, eager to secure the protection of the land he walked.
"You wish to one day rule the land. I promise, the land will always rule you." Rabo, conversing with Jarvan IV
**Passive: Art of the Druid **
Rabo commands nature itself, gaining the ability to summon an elemental depending on where he is. After summoning a Golem, another one cannot be summoned for 90/80/70 seconds. The spots where each golem can be summoned will be marked with a special symbol, visable only to Rabo.
River Golem: In the middle of both rivers. Bush Golem: Any Bush on the map. Stone Golem: From a spot in your base and the enemy base as well as any destroyed tower.
**River: River Golem **
Golem Health: 75% of Rabo’s max health.
Range: 125
Armor: Equal to Rabo’s
Magic Resist: Equal to Rabo’s
Damage: 100% of Rabo’s AD (+50% of Rabo’s AP)
Splash Damage: 75% of damage dealt applied to enemies within 100 units of the primary targets
Healing: 50% of the damage done by the Golems Auto attacks are converted to healing for Rabo.
Effects - Basic attacks deal splash damage, hitting all nearby enemies. Basic attacks also heal Rabo.
**Bush: Grass Golem **
http://orig00.deviantart.net/081a/f/2008/307/5/3/grass_monster_by_chatenoire.jpg
Health: 60% of Rabo’s Max Health
Range: 150
Armor: Equal to Rabo’s
Magic Resist:Equal to Rabo’s
Damage: 100% of Rabo’s AD (+80% of Rabo’s AP)
Bleed Damage: 10 (+10% of Rabo’s AP)
Basic attacks slice target, applying a bleed that lasts 5 seconds.
**Base: Stone Golem **
http://pre08.deviantart.net/361c/th/pre/f/2013/254/5/b/stone_golem_by_freakyfir-d6lwadc.jpg
Health: 100% of Rabo’s Max Health
Range: 150
Armor: Equal to Rabo’s
Magic Resist: Equal to Rabo’s
Damage: 100% of Rabo’s AP (+70% of Rabo’s Armor)
Stun Duration: 1 Second
Shield: 25% of Rabo’s Max health
Basic attacks stun the target for 1 second, the same target cannot be stunned for 6 seconds. Golem has +25% of Rabo’s bonus health as a shield.
_Q - Command Nature _
Range: 600
Cooldown: 15
Cost: 90 / 100 / 110 / 120 /130
Damage: 80 / 110 / 130 / 150 / 170 (+80% of Bonus AP)
Rabo commands his Golem to charge to the target location, dealing damage and a specific effect based on which Golem was sent.
River Golem: Upon reaching the target location, the River Golem will erupt dealing a second wave of damage equal to 50% of the initial damage dealt to enemies within 300 units, dealing bonus magic damage.
Grass Golem: Upon reaching the target location, the Grass Golem will slash at the nearest enemy champion, dealing it’s bleed and a slow for 10% of the targets movespeed.
Stone Golem: Upon reaching the target location, the Stone Golem will transform into a wall, stopping any units from moving through it.
W - Bark skin
Shield: 10% of Rabo’s Max Health
Range: 700
Cooldown: 15 / 14 / 13 / 12 / 11
Cost: 90 / 95 / 100 / 105 / 110
Damage: 100 / 110 / 120 / 130 / 140 (+40% of Max AP)
Passive: Rabo’s skin is as hard as tree bark, giving him a shield for 10% of his max AP. Shield regenerates after 8 seconds if broken.
Active: Rabo shoots the bark in a straight line, destroying the shield. Upon hitting an enemy, they will be encased by bark and rooted for 1 second.
E: Mandrake Sentinel
Cast Range: 300
Detection Range: 450
Silence Duration: 1.5 Seconds
Cooldown: 15
Max Charges: 2
Silencing Radius: 450
Health: 2
Rabo places a visable mandrake sentinel that will scream, silencing all enemies in an aoe around it and revealing any stealthed targets. The sentinel must wait 2 seconds before arming and being able to silence or reveal stealthed targets. Can be destroyed with 2 auto attacks.
_R: One with Nature _
Range: N/A
Cost: 100
Cooldown: 130 / 120 / 110
Rabo draws his Golem to him, fusing with it for 15 seconds and giving his ultimate new effects.
_R: Waters of Life _
Range: 100
Radius: 600
Healing per second: 100 / 125 / 150 (+60% AP)
Movespeed: 300
Healing per second while moving: 75 / 100 / 125 (+30% AP)
Cause a rainstorm, healing all allies within for 5 seconds. The rainstorm will slowly follow you at 25% of your movespeed, healing a smaller amount as it moves.
_R: Grass Blades _ Range: 1000
Width: 250
Damage: 150 / 175 / 200 / 225 / 250 (+80% Rabo’s AD) (+70% Rabo’s AP)
Dash forward, slicing all enemies struck, causing the same bleed as the golem, and slowing them for 10%.
_R: Earthen Fury _
Range: 600
Width: 200
Damage: 100 / 120 / 140 / 160 / 180 (+80% of Rabo’s Armor) (+50% of Rabo’s AP)
Shard Damage: 30 (+20% of Rabo’s Armor)
Summon shards of earth to spin around you, dealing damage to all enemies within 200 units.
Activate again to send your Golem forward in a straight line, knocking up the first enemy hit and throwing them behind you.
besides you just build ap mage tank 
and no one can touch you or your 6000 hp golem ..... you cant have a walking turret m8
