Siren's Call [Alpha Edition] Modern Masters 2015 X is the number of

X is the number of pin counters on Voodoo Doll

where X is the number of players who control at least two more lands than you

these devices doubled the output of Amrit Vatyam's forges

−2: Gain control of target creature until end of turn

Siren's Call [Alpha Edition] Modern Masters 2015 X is the number ofSet: 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.