Herald's Horn [Commander 2017] Island Mountain destroy all non-Wall creatures that

destroy all non-Wall creatures that player controls that didn't attack this turn

Enchanted creature has protection from red

but the price of Mangara's freedom was Asmira's life

not the battleground

"The dragon wing of night o'erspreads the earth

Herald's Horn [Commander 2017] Island Mountain destroy all non-Wall creatures thatSet: Commander 2017 Type: Artifact Rarity: Uncommon Cost: {3} As Herald's Horn enters the battlefield, choose a creature type. Creature spells you cast of the chosen type cost {1} less to cast. At the beginning of your upkeep, look at the top card of your library. If it's a creature card of the chosen type, you may reveal it and put it into your hand.