I'd still like to know what sort of legendary creature is just sitting in a room waiting for the party to run in and attack it, and what sort of creature has those legendary abilities. Yes, I admit it. I'm very curious to know what they were fighting against.![]()
If the DM had put the Legendary Creature with another group of creatures, our group would have died. You're looking to closely at the number of rounds. In those three rounds, he took the fighter from 56 hit points to 18 to the point the fighter had to Disengage and leave the room. The paladin was taken from 52 hit points to 25. It required an Action Surge usable once per battle at level 5. Add in a smite attack combined with a Thunderous Smite and a fireball to do enough damage to get it in range of a 25 point 2nd level sleep spell. The Legendary Creature was a beast. It was a kill or be killed fight. The thing missed twice on attacks. If it hadn't, not even sure we would be alive.
If you want to know what it is, read Hoard of the Dragon Queen. Should be the first Legendary Creature you come across that the party has to fight.
It wasn't an easy fight because it lasted three or four rounds. It lasted three or four rounds because we either killed it that fast or it would have done us in. We had to unload our best attacks on it or it was going to take us all down. You're assumed this because I didn't include how hard it hit us. Don't worry. If your party runs into this creature or something similar at the level we did, prepare to see them nearly die.