Anduin by CrazyFredy

The theme of this talent tier is quest talents. They are all somewhat situational, and take a long time to be completed, bringing in a power spike later in the game.

[Q] Miracle Worker
Reward: After using Holy Word: Serenity 10 times on allies with 25% or less health, Holy Word: Serenity gains a second charge.

[Passive] Focused Will
Reward: After being hit by 100 melee Basic Attacks without dying, become immune to Basic Attacks.

[Active] Mind Vision
Quest: Gathering Regeneration Globes increases your Mana Regeneration by 0.1 per second, up to 3.0 per second.
Reward: After collecting 30 Regeneration Globes, gain the Mind Vision ability, allowing you to reveal all enemy Heroes for 3 seconds.

The theme of this talent tier is alternative uses for the abilities. If you were going for a heal build, for example, you could turn your main damage dealing ability into a heal, or for a damage build, turn your heal into a massive burst damage dealer.

[Q] Holy Fire
Holy Word: Serenity can be used on enemies, dealing damage instead.

[W] Pain Suppression
Upon expiring, Power Word: Shield grants 20 Armor for 4 seconds, reducing damage taken by 40%.

[E] Shadow Mend
Shadow Word: Pain can now stop at allied heroes, healing them instead of dealing damage.

The theme of this talent tier is active talents. They might be a little overpowered.

[Active] Purify
Cooldown: 60 seconds
Activate to remove all stuns, roots, and silences, and apply Holy Word: Serenity on the target. Can't be used on self.

[Active] Rapture
Cooldown: 60 seconds
Activate to remove the cooldown of your Power Word: Shield for 3 seconds.

[Active] Dispersion
Cooldown: 60 seconds
Activate to become Unstoppable and gain 40 Armor for 4 seconds, reducing damage taken by 40%. Using abilities ends the effect. Can be used while Stunned.

The theme of the Heroic tier is choosing a "true form" that is playstyle-defining.

[R1] Apotheosis

[R2] Guardian Spirit

[R3] Shadowfrom

The theme of this talent tier is buffs/debuffs, pretty simple stuff.

[Q] Clarity of Mind
Holy Word: Serenity causes cooldowns to decrease twice as fast for 4 seconds.

[W] Strength of Body
Power Word: Shield increases movement speed by 50% for 4 seconds.

[E] Dominance of Soul
Shadow Word: Pain silences enemy for 4 seconds.

The theme of this talent tier is powerful upgrades to basic abilities.

[Q] Holy Word: Sanctify
Holy Word: Serenity now affects all allies within a large radius of the target. Cooldown is increased by 6 seconds.

[W] Power Word: Barrier
Power Word: Shield now creates a barrier around the target, giving all allies within it an untalented Power Word: Shield.

[E] Shadow Word: Death
Shadow Word: Pain now instantly kills all minions hit, and deals 2% of a hit hero's health as damage every second.

This final talent tier can even further upgrade Anduin's appearance. Alternatively, you could go for either of the pretty powerful active talents.

[R1] Archangel
Increases all healing by 100%.
[Anduin now has golden wings]

[R2] Spirit of Redemption
If you heal for a massive amount of Health while a Guardian Spirit, you will be brought back to life.
[Anduin now has a Guardian's wings]

[R3] Voidform
Killing an unit reduces cooldowns by 1 second and increases attack speed by 5%, up to 50%. This bonus is lost after not killing anything for 10 seconds.
[Anduin now has tentacles]

[Active] Leap of Faith
Cooldown: 30 seconds
Pull target ally in front of you.

[Active] Fade
Cooldown: 30 seconds
Become stealthed and remove all negative effects from yourself.