I created a new Champion, Is it good?

Name: Ageis

Passive: Mark of the Collosus- Hitting a target with a basic attack causes his next spell to deal 30% of his health as bonus damage in a 300 range AOE. (7 Second Cooldown)

[Q] Crippling Blow- Ageis Strikes his target with a ferociously. dealing 250/275/300/325/350 Attack Damage in a cone. Enemy targets behind the target take 20% more damage and he is healed for 15% of the damage he deals. [10/8/6/4/2 Second Cooldown] [30 Mana]

[W] Demacian Slam- Ageis Dashes to his target and body slams his target savagely. Dealing 180/190/200/210/220 Attack Damage and Stunning for 1.5/2/2.5/3/3.5 seconds. Targets stunned by Ageis take an additional 10% damage from his allies, and if the enemy target is clicked by a nearby ally, they automatically dash to the target. [18/15/12/9/6 Second Cooldown] [50 Mana]

[E] Stored Shield- Ageis passively gets a shield that shields him for 15% of his maximum health. Activating his shield makes it absorb an unlimited amount of damage for 3 seconds then releasing it in an AOE dealing 30% more damage than he absorbed. [20/18/16/14/12 Second Cooldown] [70 Mana]

[R] Heroic Stance- Ageis channels for 3 seconds before globally teleporting to any location on the map. If he teleports to an ally location, they gain a shield that blocks up to 700 Magic Damage and Attack Damage for 1.5 seconds. [200 Second Cooldown][120 Mana]