Overview
First you can cut your line because dyrroth has sustain in early game and after you can envied the enemy core or help Ather lane to fast clear and to take advantage of the early game.
Strengths
Dyrroth strength is his sustain and his burst damage
Weaknesses
Dyrroth weakness if dyrroth didn't have the early game dyrroth is useless
Fighter item
For better sustain and for a high chance of surviving tame fights
Fighter emblem
Because of the sustain it gives and better for tame fights because your life keeps coming back.
Battle Spell
I chose vengeance because it can deflect damage and it's good for marksman because if you buy blade armor it can deflect more damage to your enemy
Dyrroth game play
My advice you should maximize dyrroth's life still in the early game to get advantage of your enemy on level and gold
Best With Thamuz
They can survive any clash because they are bout sustain heros good for tame fights and clash
Watch Out For Minsitthar
If dyrroth and minsitthar fight on early game dyrroth would win because of dyrroth's sustain on early game if on late game dyrroth has no chance of winning because minsitthar is item base hero