Corrosive Mentor

Creature - Elemental Rogue 1/3, 2B (3)
Black creatures you control have wither. (They deal damage to creatures in the form of -1/-1 counters.)
Guttering cinders stoke their dying flames by snuffing out the lights of others.
Illus. Daarken

Format Legality	Legal in Vintage, Legacy, Extended, MTGO Classic Banned in Standard
Printings (1/10)	Shadowmoor (Uncommon)