Pit Fiend 21
Rakshasa 22
Gold Dragon 26 - The best Monsters are enemies. These guys make better allies than enemies.
Lich 26
Gelatinous Cube 15
Umber Hulk 18
Owlbear 27
Displacer Beast 10
Storm Giant 19
Frost Giant 12
Stone Golem 20
Beholder 30 - Xanathar is my Overload!
Couatl 14
Black Dragon 16