Siren's Call [Beta Edition] Nissa you may sacrifice an artifact

you may sacrifice an artifact

The earth's real treasure is far deeper

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

that spell can't be countered

Siren's Call [Beta Edition] Nissa you may sacrifice an artifactSet: 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.