Mine Collapse 
Instant
$0.16 #13156 0.32 5.2 years
If it's your turn, you may sacrifice a Mountain rather than pay this spell's mana cost.
Mine Collapse deals 5 damage to target creature or planeswalker.
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Cards similar to Mine Collapse expected a card that isn't here?
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"You may sacrifice a Mountain rather than pay this spell's mana cost."
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"You may sacrifice two Mountains rather than pay this spell's mana cost."
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"You may sacrifice two Mountains rather than pay this spell's mana cost."
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"this card deals 4 damage to target creature or planeswalker."
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"this card deals 4 damage to target creature or planeswalker."
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"this card deals 4 damage to target creature."
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"Flashback—Sacrifice a Mountain. You may cast this card from your graveyard for its flashback cost. Then exile it."
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"this card deals 4 damage to target creature or planeswalker."
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"this card deals 4 damage to target creature or planeswalker."
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"this card deals 5 damage to target creature or planeswalker and 2 damage to that permanent's controller."
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"When this creature enters, sacrifice it unless you sacrifice two Mountains."
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"this card deals 5 damage to target creature or planeswalker."
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"At the beginning of your upkeep, sacrifice this creature unless you sacrifice a Mountain."
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"this card deals 5 damage to target creature or planeswalker."
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"this card deals 4 damage to target creature or planeswalker. If a nonred permanent is dealt damage this way, you sacrifice a land."