New Champion Idea (AP Tank Jungler)
I did not come up with a name for this champion yet, but for reference purposes he will be tentatively known as Aquatis.
Aquatis is intended to be an AP Tank/AP Bruiser. He is suited for the jungle, but can act as a Support, Mid-lane Mage, or even as a Top lane bully. He is a soul bounded to enchanted water, having no absolute form, but riddled with stones from the river he came from, so imagine a human-like water soldier with stones in place of what would be armor.
Passive Amorphous Form Aquatis takes 8% reduced direct damage (all non-AoE), including basic attacks, DoT single target, and single target spells.
Start off with his E, since it allows a change in "form."
E - Torret Toggled off he passively regenerates mana and health. Toggled on, he gains increased movement speed and his passive is increased to 12% reduced damage, passes through units and his two other non-ultimate abilities change to reflect his new form; consumes mana while on. Alternate abilities do not share the same cooldown. Think of this ability as him surging like a river, in which when off his body is more managed and he "rests," and toggled on he becomes streamlined, etc.
Q - Surge Aquatis shoots a bolt of water in a direction, hitting the first enemy unit, dealing damage and slowing (treated as single target), and dealing reduced AoE damage to units around the target without a slow. Being a medium cool down spell with medium to high damage and some utility, this allows him to harass in lane, chase/kite, and deal damage to camps. Q - Douse (E toggled on) Aquatis throws enchanted water in a direction, hitting all enemy units, but dealing reduced damager per enemy hit. Does increased damage to large monsters, minions and champions. This ability has a low cooldown, and is what allows him to take on jungle camps well-enough. It is also a good tool for combat, but lacks utility.
W - Frost Enchants an enemy unit to cooldown over 2 seconds, taking reduced movement speed that ramps up until a half second stun. The idea is to "chill" off an opponent. It is point and click, so the only counterplay is its 24 second cooldown, and its lack of immediacy. The mechanic is like Nasus' wither, but it hits 100% slow reduction and becomes a 'stun' ie prevents auto attacks, channels and movement, all within a span of 2 seconds. The stun only comes into play the last half-second to second (increasing with rank) of the entire duration. Deals damage. W - Brine (E toggled on) Soaks an enemy target with searing brine, decreasing armor and magic resist by a percent, dealing DoT magic damage. 14 second cooldown.
R - Deluge Upon cast, E is toggled on. Consumes mana to let loose an infinite stream of water in surrounding area, dealing constant AoE damage in a large radius, and slowing all enemies within the area by 20/25/30% while this ability is toggle on. Has a 90 second cooldown however. Great for teamfights, almost like Maokai's ult. If Aquatis is going tank, it provides some base damage and team-wide utility, as an AP it can rack up a lot of damage.