Siren's Call [Alpha Edition] Vanguard Set: HeartGold & SoulSilver: Undaunted

Set: HeartGold & SoulSilver: Undaunted Type: Lightning Rarity: Rare Retreat cost: Colorless

Set: Unlimited Edition Type: Creature — Troll Rarity: Rare Cost: {2}{R} Sedge Troll gets +1/+1 as long as you control a Swamp

Set: Urza's Saga Type: Enchantment Rarity: Rare Cost: {1}{B}{B} Whenever a player casts a spell

Shuffle Green Sun's Zenith into its owner's library

Whenever a Dragon you control becomes the target of a spell or ability an opponent controls

Siren's Call [Alpha Edition] Vanguard Set: HeartGold & SoulSilver: UndauntedSet: Alpha Edition Type: Instant Rarity: Uncommon Cost: {U} Cast this spell only during an opponent's turn, before attackers are declared. Creatures the active player controls attack this turn if able. At the beginning of the next end step, destroy all non Wall creatures that player controls that didn't attack this turn. Ignore this effect for each creature the player didn't control continuously since the beginning of the turn.