I did a Tol Dagor with 2 new players i introduced to wow and on the last boss we wiped for 1 hour.
I still remembered all Mythic + mechanics and teached them
It was a huge mini-adventure to learn the fight
Teached the "soak the bullet" mechanic...it was insane
We ended up clearing it
Got a Temple of Seth on my paladin while leveling and despite spamming every heal and external I could I couldn't keep the tank alive let alone most of the other party members. Glad they're finally fixing it.