Mana Short [International Collectors' Edition] 181 cannot activate their effects

cannot activate their effects

Set: Collectors' Edition Type: Creature — Human Assassin Rarity: Rare Cost: {1}{B}{B} {T}: Destroy target tapped creature

Set: HeartGold & SoulSilver: Black Star Promos Type: Lightning Rarity: Black Star Promo Retreat cost: Colorless

saying: 'It is a talisman against all evil

Set: Zendikar Type: Enchantment Rarity: Rare Cost: {1}{W} At the beginning of each opponent's end step

Mana Short [International Collectors' Edition] 181 cannot activate their effectsSet: International Collectors' Edition Type: Instant Rarity: Rare Cost: {2}{U} Tap all lands target player controls and that player loses all unspent mana.