Siren's Call [Beta Edition] Pioneer In ice there is perfect

In ice there is perfect tranquility

Set: Beta Edition Type: Creature — Djinn Rarity: Rare Cost: {4}{U}{U} Flying (This creature can't be blocked except by creatures with flying or reach

Set: Beta Edition Type: Instant Rarity: Uncommon Cost: {U} Cast this spell only during an opponent's turn

If any creatures with banding you control are blocking or being blocked by a creature

If you sacrifice an Island this way

Siren's Call [Beta Edition] Pioneer In ice there is perfectSet: 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.