My personal build

Martichoras fires hundreds of venomous spikes from his wings, creating a circular rain of spikes that deals damage as it rolls forward. As the rain moves, it leaves behind a toxic trail that slows and damages all enemies within the trail.

Ability Type: Area, Slow, Damage
Range/Radius: 40,60 / 11
Initial Damage: 80 / 120 / 160 / 200 / 240 (+70% of your Physical Power)
Trail Damage: 6 / 10 / 14 / 18 / 22 (+10% of your Physical Power every 0.5s)
Slow: 25 / 27.5 / 30 / 32.5 / 35%
Trail Duration: 3s
Cost: 60 / 65 / 70 / 75 / 80
Cooldown: 14s

Martichoras shoots a stinger, dealing damage, piercing minions, and stopping on the first enemy god hit. The stinger then persists for 3s attached to the enemy god, reducing their healing, or at a point on the ground. Martichoras can explode it by hitting it with a basic attack or ability. The explosion deals damage, reduces healing, and Roots the god who held the stinger.

Ability Type: Line, Root, Damage
Range/Radius: 55 / 20
Projectile Damage: 45 / 80 / 115 / 150 / 185 (+55% of your Physical Power)
Explosion Damage: 30 / 65 / 100 / 135 / 170 (+50% of your Physical Power)
Root Duration: 1 / 1.2 / 1.4 / 1.6 / 1.8s
Healing Reduction: 40% for 5s
Cost: 40 / 45 / 50 / 55 / 60
Cooldown: 13s

Martichoras creates a patch of stealth grass in which he and all allied gods may hide. While inside and on exiting the patch, Martichoras gains Movement Speed. Martichoras’ Basic Attacks from stealth gain 10% additional Basic Attack Damage up front and apply 8 stacks of Venom. Enemies may reveal anyone hidden in the patch by entering it or by placing a ward inside its range.

Ability Type: Area, Buff
Range/Radius: 55 / 27
Patch Duration: 120s
Max Patches: 3
Movement Speed: 10 / 15 / 20 / 25 / 30% for 3s
Cost: 60 / 65 / 70 / 75 / 80
Cooldown: 25 / 24 / 23 / 22 / 21s

Martichoras becomes CC immune and untargetable as he soars into the air, raining down 12 bursts of damaging toxins over 3s. Each time an enemy is hit with a burst, their Physical Protections are reduced.

Ability Type: Circle, Debuff, Damage
Range/Radius: 55 / 10
Damage per Burst: 30 / 45 / 60 / 75 / 90 (+12% of your Physical Power)
Protection Reduction: 3% per stack, max 8 stacks
Debuff Duration: 4s
Cost: 100
Cooldown: 100s