Sorry if I went a little overboard but I really loved the height based fighting concept.
I think altitude Harpoon might work better as an ultimate
It's clearly his defining skill and seems like it might be a touch strong early game in it's current form. Have it be a an attack orb instead of a spell. Im not sure it's codable but what would be great would be his attack range increasing the lower his target is compared to him. Might have to remove the armor thing because when it's always on that would be too strong.
Get rid of Orc Aspect and make Wind Ace 2 abilites
It doesn't really fit his theme. As for a skill to replace it I think you already have it. Change Wind ace into 2 abilities A knockback that stuns enemies it runs into to and an area based ensnare.
Turn Wind Ace into a knockback spell only
Wind Ace now allows you to knock enemies together or into a trap. It's casting effect is now cone shaped and sends out wind projectiles. These only apply to the first targets they hit and then the knockback is what does the damage.
If your target doesn't collide with anything have it do minor damage and no stun. If you hit them into another enemy or a pit make it do lot's of damage and stun. Make sure knockbacks can knock people over cliffs.
Turn Ensnare part into single target Ensnaring traps that you place on ground.
Have a 15 trap limit. Has melee cast range(risky mid-fight casting) The traps should have a cd like 40/30/20/10 seconds, a 2.5/3/3.5/4 second ensnare and an activation time where they are visible. They will give no vision unless activated. Make traps count as collisions for Wind Ace. No stacking traps allowed and don't let them be too close together.
A lot more text on how Tyrag fights
Do you like the changes? I love the concept of a height based hero and I think this ambushing/trapping style fits that theme perfectly.