Core Prowler [Mirrodin Besieged] Guilds of Ravnica If that card has the

If that card has the chosen name

Set: Fourth Edition Type: Creature — Spirit Rarity: Rare Cost: {B} Flying (This creature can't be blocked except by creatures with flying or reach

Whenever Teferi's Imp phases out

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

Whenever you surveil

Core Prowler [Mirrodin Besieged] Guilds of Ravnica If that card has theSet: 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.)