Siren's Call [Beta Edition] Nissa Set: Champions of Kamigawa Type:

Set: Champions of Kamigawa Type: Legendary Land Rarity: Rare Boseiju

you may sacrifice an artifact

Set: Mirrodin Besieged Type: Sorcery Rarity: Rare Cost: {X}{G} Search your library for a green creature card with converted mana cost X or less

You may have that player lose that much life

Set: Judge Gift Cards 2006 Type: Creature — Human Wizard Rare Cost: {R} {R}

Siren's Call [Beta Edition] Nissa Set: Champions of Kamigawa Type:Set: Beta 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.