Noxious Hatchling

Creature - Elemental 6/6, 3{B/G} (4)
Noxious Hatchling enters the battlefield with four -1/-1 counters on it.
Wither (This deals damage to creatures in the form of -1/-1 counters.)
Whenever you cast a black spell, remove a -1/-1 counter from Noxious Hatchling.
Whenever you cast a green spell, remove a -1/-1 counter from Noxious Hatchling.¹
Illus. Nils Hamm

Gatherer Card Rulings [Nov 2009]

• 8/1/2008: If you cast a spell that's both of the listed colors, both abilities will trigger. You'll remove a total of two -1/-1 counters from the Hatchling.
• 8/1/2008: If there are no -1/-1 counters on it when the triggered ability resolves, the ability does nothing. There is no penalty for not being able to remove a counter.

Format Legality	Legal in Vintage, Legacy, Extended Banned in Standard
Printings (1/9)	Eventide (Uncommon)