Wall of Ice [Collectors' Edition] Bolas's Meditation Realm Enchanted land has "{T}: Prevent

Enchanted land has "{T}: Prevent the next 1 damage that would be dealt to any target this turn

Set: Stronghold Type: Legendary Artifact Rarity: Rare Cost: {2} {T}: Target legendary creature gets +2/+2 until end of turn

Set: Commander 2013 Type: Creature — Avatar Rarity: Mythic Cost: {4}{W}{W}{W} Serra Avatar's power and toughness are each equal to your life total

Recent research suggests they were invented by the brothers' original master

Underworld Dreams deals 1 damage to that player

Wall of Ice [Collectors' Edition] Bolas's Meditation Realm Enchanted land has "{T}: PreventSet: Collectors' Edition Type: Creature Wall Rarity: Uncommon Cost: {2}{G} Defender (This creature can't attack.) "And through the drifts the snowy cliffs Did send a dismal sheen: Nor shapes of men nor beasts we ken The ice was all between." Samuel Coleridge, "The Rime of the Ancient Mariner"