Siren's Call [Alpha Edition] Rivals of Ixalan a 'poem of sand' was

a 'poem of sand' was of little account

Set: Commander's Arsenal Type: Legendary Creature — Elemental Rarity: Mythic Cost: {5}{G}{U}{R} Creatures you control have haste

Return those cards to the battlefield under their owner's control at the beginning of the next end step

If you win the bidding

Set: Commander 2014 Type: Land Rarity: Rare Emeria

Siren's Call [Alpha Edition] Rivals of Ixalan a 'poem of sand' wasSet: 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.