Lightning Serpent

Creature - Elemental Serpent 2/1, XR (1)
Trample, haste
Lightning Serpent enters the battlefield with X +1/+0 counters on it.
At the beginning of the end step, sacrifice Lightning Serpent.¹
Illus. John Avon

Gatherer Card Rulings [Nov 2009]

• 7/15/2006: If Lightning Serpent enters the battlefield without X being paid because an effect puts it onto the battlefield or an effect lets you cast it without paying its mana cost, then X is 0.

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