| Lightning Axe | ||
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| Printings/Rarity: |  
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| Cost: | 
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| CMC: | 1 | |
| Card Type: | Instant | |
| Oracle Text: | As an additional cost to cast Lightning Axe, discard a card or pay  .
Lightning Axe deals 5 damage to target creature. | |
| Flavor Text: | : "A gargoyle's meat can be carved with an ordinary cleaver, but for its petrous hide . . ." —Asmoranomardicadaistinaculdacar, The Underworld Cookbook
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| Rulings | |
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| 2006-09-25 | This has an additional cost with an option. Essentially, the card’s cost to cast is either or and a discard. But its mana cost is always and its converted mana cost is always 1.
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| 2016-04-08 | The converted mana cost of Lightning Axe is 1, independent of which additional cost you paid. |