Lightning Axe

Instant, R (1)
As an additional cost to cast Lightning Axe, discard a card or pay {5}.

Lightning Axe deals 5 damage to target creature.¹
"A gargoyle's meat can be carved with an ordinary cleaver, but for its petrous hide . . ." —Asmoranomardicadaistinaculdacar, The Underworld Cookbook
Illus. Dan Scott

Gatherer Card Rulings [Nov 2009]

• 9/25/2006: This has an additional cost with an option. Essentially, the card's cost to cast is either {5}{R} or {R} and a discard. But its mana cost is always {R} and its converted mana cost is always 1.

Format Legality	Legal in Vintage, Legacy, Extended, MTGO Classic Banned in Standard
Printings (1/9)	Time Spiral (Common)