Eirena by TimeLord

Level 1:
Long-Range Missiles: Quest: Attack enemy Heroes with basic attacks 70 times. Reward: Increase your attack range by 1.
Arcane Pool: Quest: Regen Globes increase your Mana regen by 0.2 per globe. Reward: Collect 20 Globes to increase Mana regen by additional 1 Mana per second.
Magic Armor: Quest: Affect Enemy Heroes with Powered Armor 20 times. Reward: Increase cooldown slow of Powered Armor to 200%.

Level 4:
Protecting Push: If cast on an ally, Forceful Push knocks back enemies 70% farther and gives the ally a shield.
Greater Charm: Increase the AoE of Charm by 30%.
Enduring Ward: Increases the duration of Missile Ward to 3.5 seconds.

Level 7:
Fatal Push: Increases the damage of Forceful Push for each enemy affected.
Increased Protection: Reduces the range requirement of Missile Ward by 2.
Charmed Strength: Minions converted with Charm have 20% bonus Health.

Level 10:
Mass Hex: Lob a bulb of magical energy that explodes after 1.5 seconds, polymorphing all enemy Heroes in the target area into chickens for 1.5 seconds.
Focused Mind: Mark an enemy Hero, increasing their hitbox by 50%. Allied Heroes have 40% increased attack speed while attacking the marked Hero. Lasts 4 seconds.

Level 13:
Empowered Charm: Minions converted with Charm have 15% bonus damage.
Projected Armor: Powered Armor can now be cast on enemy Heroes to reduces their Spell Power by 10 for 3 seconds.
Arcane Mastery: Whenever you cast an ability, your next 2 basic attacks deal 100% bonus damage.

Level 16:
Ward of Wind: Missile Ward also increases movement speed by 20%.
Healing Charm: Charm now also heals allies. Healing amount for Heroes reduced by 50%.
Forceful Blast: Knocked back enemies are stunned for 0.5 seconds.

Level 20:
Hex Blast: Reduce explosion delay to 1 second and increase the polymorph time to 2 seconds.
Total Focus: The target's Armor is reduced by 20.
Forceful Pull: Forceful Push now pulls enemies toward the target instead of pushing them back.