Forcefield [International Collectors’ Edition] Pro Tour Collector Set not wearing armor could be

not wearing armor could be a fatal mistake

cast it without paying its mana cost

Then shuffle

Set: Prophecy Type: Enchantment Rarity: Common Cost: {2}{U} Whenever an opponent casts a spell

Set: International Collectors’ Edition Type: Enchantment — Aura Rarity: Uncommon Cost: {1}{B} Enchant creature card in a graveyard

Forcefield [International Collectors’ Edition] Pro Tour Collector Set not wearing armor could beSet: International Collectors Edition Type: Artifact Rarity: Rare Cost: {3} {1}: The next time an unblocked creature of your choice would deal combat damage to you this turn, prevent all but 1 of that damage.