Fight part one occurred last night. Did you know that 12th level PCs are ***holes? The sheer number of proning, immobilizing, slowing, and similar powers gets ridiculous. Add in a bard with psychic locking vicious mockery, giving the dragon a pretty much permanent -4 penalty to attacks
Psychic Lock applies to only one attack roll, so given that the Dragon has multiple attacks most of its attacks should have been at -2, not -4.