Siren's Call [Beta Edition] Sphinx you may pay {2}{G}

you may pay {2}{G}

Set: Vanguard Series Type: Vanguard Rarity: Rare Spells you cast cost {1} less to cast

Set: Portal Three Kingdoms Type: Creature — Human Soldier Rarity: Rare Cost: {3}{R} Horsemanship (This creature can't be blocked except by creatures with horsemanship

Set: Planeshift Type: Instant Rarity: Rare Cost: {W} Kicker {W} (You may pay an additional {W} as you cast this spell

Siren's Call [Beta Edition] Sphinx you may pay {2}{G}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.