Wall of Bone [International Collectors' Edition] BW26 You can only use each

You can only use each effect of "War Rock Fortia" once per turn

Set: Ixalan Type: Creature — Siren Pirate Rarity: Rare Cost: {2}{U}{U} Flash

Set: Black & White: Base Set Type: Fighting Rarity: Uncommon Retreat cost: Colorless

Set: Urza's Destiny Type: Sorcery Rarity: Uncommon Cost: {2}{B}{B} Exile target nonblack creature

Wall of Bone [International Collectors' Edition] BW26 You can only use eachSet: International Collectors' Edition Type: Creature Skeleton Wall Rarity: Uncommon Cost: {2}{B} Defender (This creature can't attack.) {B}: Regenerate Wall of Bone. (The next time this creature would be destroyed this turn, it isn't. Instead tap it, remove all damage from it, and remove it from combat.) The Wall of Bone is said to be an aspect of the Great Wall in Hel, where the bones of all sinners wait for Ragnarok, when Hela will call them forth