Vexilus Praetor

• WOTC Official Reminder Textofficial rules
  Vigilance — Attacking doesn't cause this creature to tap.
• WOTC Official Reminder Textofficial rules
  Flash — You may cast this spell any time you could cast an instant.

• WWizards of the Coast2022-10-07
  Official Ruling
  Protection from everything means that commanders you control can't be the target of any spells or abilities, they can't be blocked, nothing can be attached to them, and all damage that would be dealt to them is prevented. They can still be affected in other ways (such as by Their Name is Death, for example).

Rulings via Scryfall