Flamestrike
Legend
Wrong, you don't have to be moving to stay in bladesong, it's not rage. The conditions that end it are, incompacitated, don medium or heavy armor, or a shield, or use two hands to make an attack with a weapon.
Like I said, its DM dependent. Many DMs would rule being unable to move or act due to the lethargy of haste dropping = you cant dance anymore.
Well if you close your eyes to attack, it's the same as looking away, you give yourself disadvantage and give your attacker advantage.
Technically all attacks are made simultanously though, so I agree that looking away (closing your eyes) is a 'whole of round' thing (you can do it, but the effects last till the start of your next turn).
Also, it doesn't prevent you from hitting the mirror image.
It does. Read the spell. You need sight for it to work. If you cant see the images (fighting in darkness, or closing your eyes, or the caster is invisible for example) you are unaffected by the spell.
A creature is unaffected by this spell if it can’t see, if it relies on senses other than sight, such as blindsight, or if it can perceive illusions as false, as with truesight.