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 - $0.10
Lightly Played - $0.10
Moderately Played - $0.10
Heavily Played - $0.10
Damaged - $0.10
Near Mint Spanish - $0.10
Lightly Played Spanish - $0.10
Moderately Played Spanish - $0.10
Heavily Played Spanish - $0.10
Damaged Spanish - $0.10