Core Prowler [Mirrodin Besieged] Guilds of Ravnica Sacrifice a land: Return World

Sacrifice a land: Return World Breaker from your graveyard to your hand

Set: Mirrodin Besieged Type: Sorcery Rarity: Rare Cost: {X}{B}{B} Put X -1/-1 counters on each creature

Set: Planechase Type: Artifact Creature — Juggernaut Rarity: Uncommon Cost: {4} Trample

Set: Revised Edition Type: Instant Rarity: Uncommon Cost: {W} Exile target creature

Core Prowler [Mirrodin Besieged] Guilds of Ravnica Sacrifice a land: Return WorldSet: Mirrodin Besieged Type: Artifact Creature Horror Rarity: Uncommon Cost: {4} Infect (This creature deals damage to creatures in the form of 1 1 counters and to players in the form of poison counters.) When Core Prowler dies, proliferate. (Choose any number of permanents and or players, then give each another counter of each kind already there.)