Trial of Valor is a raid whose entrance is located in Stormheim in the World of Warcraft game. The minimum level for this dungeon is 110+. The main anagonist race in this dungeon are Vrykul. The raid contains 2 bosses. The end boss of Trial of Valor is Helya.
This is a two phase fight, the first part is to face off against Odyn's fellow bosses from Halls of Valor dungeon. Instead of taking them on individually, you take them on together. You need to split into two groups and get them down to 25%. Melee should fight Hyjra, the female and Ranged take on Hymdall. Its a simple and easy fight and shouldn't prove too taxing. After this fight, you take on Odyn himself. Again like the dungeon, you don't actually get to kill him, just weaken him.
The fight against Odyn is pretty much the same as the dungeon. The only exception is that he will call on adds to help him. You'll also need to move out of the fight circle when it becomes illuminated. There is also the patterns above the head that you need to be aware of and move to the correct pattern.
Once the fight is over you move to the next area where you need to make a run to the entrance to the next section. One word of warning is that some groups might be pulled back for certain fights and so you must keep enough back to support them.
Guam is Helya's pet monster who you might remember if you have done the Stormheim questline when you have had to visit the underworld. This time its much harder. This time he has a breathe which you need to share damage otherwise people will die. He'll also do a charge and you need to move out of the way or they'll be a massive amount of damage caused to your player.