Siren's Call [Limited Edition Beta] Instant The earth's real treasure is

The earth's real treasure is far deeper

where X is that creature's power

you may pay {1}

Untap all creatures you control

Set: Portal Three Kingdoms Type: Sorcery Rarity: Uncommon Cost: {1}{R} Rockslide Ambush deals damage to target creature equal to the number of Mountains you control

Siren's Call [Limited Edition Beta] Instant The earth's real treasure isSet: Limited Edition Beta Type: Instant 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.