Legion Commander Abilities Guide:
1. Overwhelming Odds (Active, ground target)
Turns the enemies numbers against them, dealing damage and granting you 9% bonus movement speed per hero and 3% per unit in the 315 AoE for 7 seconds. Deals bonus damage to illusions and summoned units.
Damage: 60/120/180/240 +10 damage per unit
Summoned Unit Bonus Damage: 50% of units hp
Cast Range: 1000
Movement Bonus per unit: 9% per hero, 3% per unit (lasts 7 seconds)
2. Press The Attack (Active, ally or self target)
Removes all debuffs and disables from the targeted ally and grants them bonus attack speed and health regen for 4 seconds.
Attack Speed: 60/80/100/120
Health Regeneration: 30/40/50/60
Duration: 4 seconds
3. Moment of Courage (Passive)
When Tresdin is attacked, he has a chance to gain a moment of courage, instantly attaking again with bonus lifesteal.
Notes: Cannot proc more than once every 0.75 seconds. The lifesteal is not an orb effect.
4. Duel (Active, enemy hero target)
Calls the targeted enemy for a duel. Both you and the enemy will be forced to attack each other and will both be unable to use items or abilities. The victor gains 10 permanent bonus damage.
Duration: 4/4.75/5.5 seconds
Duel winner bonus damage: 10 damage.
Cast Range: 100
Notes: The loser of the duel is the hero that dies while under the buff. There is no victor if both heroes are alive at the end of the duration.
Counter Legion Commander
So sorry to say friends I have not found something really effective against this hero. Some hero like slark can be good against this hero. Please share what ever is your strategy to bring down this big guy!