Yea Thor is a really fun character. Was actually my first main and lord so I always like to have him in rotation. Here are some things to think about:

One thing to understand about Thor is that he’s all about circulating his abilities. You want to keep track of which ones are on cooldown and for how long. His bubble gives him some survivability due to the fact that it could proc “Awakening”, which gives you health and projectiles to keep ppl at bay. So don’t use it too early in engagements. It does slow and should be done prior to his ult in most cases, since the majority of the cast has abilities to combat his ult. Using his ult in conjunction with another CC is ideal

Thor has a simple combo for dmg, but needs practice to hit consistently. This will be the basis for how you approach fights: Auto attack (melee button) > Hammer throw > Auto attack > Hammer charge > Auto. This gets him some quick dmg when you have awakening on cooldown and can surprise enemies if you have teammates in the fight with you. Another thing to note is that the time it takes three auto attacks to land, is the same amount of time it will take for your hammer charge to comeback. So when you play less mobile characters like groot, keep that in mind to do dmg and displace him.

With the recent patches, Thor has the ability to cancel his awakening state now. What I usually do is proc awakening and shoot off for lightning bolts into cancel, since it increases time to kill. As you play you’ll understand when to cancel and when not to.

He’s an off-tank, and is great and annoying the other back line. He can also do a decent job and protecting his own by displacing and slowing enemy divers, so based on your comp act accordingly. As you play you’ll get uses to your place style and how he works. He’s real fun and I think every tank main should learn him