Myth is a Runeword "HelAmnNef" in Diablo 2 Resurrected (D2R). It requires these 3 runes to be inserted into a socketed item in the exact order: Hel + Amn + Nef . The eligible bases for Myth are the following: Body Armors . This is the only Runeword in the game that has X% Chance to cast Level X Howl when struck attribute.
Hel · Amn · Nef
Defense: 188 - 202
Durability: 50 of 50
Required Strength: 56
Required Level: 25
3% Chance to cast Level 1 Howl when struck
10% Chance to cast Level 1 Taunt on striking
+2 to Barbarian Skill Levels
+30 Defense Vs. Missile
Replenish Life +10
Attacker Takes Damage of 14
Requirements -15%
Socketed (3)
Trade items on d2trader.net

How to obtain Myth

The fastest way to get this item on Battle.net is via trading, you can use the Item Price Checker to see how much Myth is worth.
Another way of getting this Runeword is by farming the runes and the base. Find the drop rates of these items in the Item Database.

Myth bases

The best base for Myth is Cuirass. Below is a list of all eligible 3 socket bases for Myth.