Siren's Call [Alpha Edition] Rivals of Ixalan If the chosen card is

If the chosen card is cast as a spell

the ankle stone is connected to the leg stone

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

If you win the bidding

You start the bidding with a bid of 1

Siren's Call [Alpha Edition] Rivals of Ixalan If the chosen card isSet: 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.