Azorius Herald can't be blocked. When Azorius Herald enters the battlefield, you gain 4 life. When Azorius Herald enters the battlefield, sacrifice it unless {U} was spent to cast it.
"As peace should be—gentle yet unstoppable."
—Augustin IV
Near Mint - $600
Lightly Played - $500
Moderately Played - $400
Heavily Played - $400
Damaged - $300
Near Mint Spanish - $600
Lightly Played Spanish - $500
Moderately Played Spanish - $400
Heavily Played Spanish - $400
Damaged Spanish - $300