Downhill Charge 
Instant
$0.26 #12174 0.06 26.6 years
You may sacrifice a Mountain rather than pay this spell's mana cost.
Target creature gets +X/+0 until end of turn, where X is the number of Mountains you control.
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Cards similar to Downhill Charge expected a card that isn't here?
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Thunderclap98%
$0.19↓#15788↓0.29↑26.9 years
"You may sacrifice a Mountain rather than pay this spell's mana cost."
Crash98%
$0.22↓#24063↓0.75↑26.9 years
"You may sacrifice a Mountain rather than pay this spell's mana cost."
Fireblast96%
$0.63↑#17291↓0.57↑29.6 years↑
"You may sacrifice two Mountains rather than pay this spell's mana cost."
Mogg Alarm96%
$0.23↓#18908↓0.0026.6 years
"You may sacrifice two Mountains rather than pay this spell's mana cost."
Mine Collapse96%
$0.16↓#131560.32↑5.2 years↓
"If it's your turn, you may sacrifice a Mountain rather than pay this spell's mana cost."
Pulverize94%
$1.22↑#25694↓0.39↑26.9 years
"You may sacrifice two Mountains rather than pay this spell's mana cost."
Rathi Dragon80%
$0.38↑#31033↓0.1128.9 years↑
"When this creature enters, sacrifice it unless you sacrifice two Mountains."
Lithophage78%
$0.32↑#31102↓0.0726.9 years
"At the beginning of your upkeep, sacrifice this creature unless you sacrifice a Mountain."
Seismic Strike78%
$0.08↓#138320.1217.1 years↓
"this card deals damage to target creature equal to the number of Mountains you control."
Spitting Earth78%
$0.05↓#132260.43↑29.9 years↑
"this card deals damage to target creature equal to the number of Mountains you control."
Lava Dart76%
$0.88↑#6182↑0.0024.3 years↓
"Flashback—Sacrifice a Mountain. You may cast this card from your graveyard for its flashback cost. Then exile it."
Mind Swords76%
$0.17↓#24120↓1.12↑26.6 years
"If you control a Swamp, you may sacrifice a creature rather than pay this spell's mana cost."
Rockslide Ambush73%
$37.82↑#26831↓0.50↑27.3 years
"this card deals damage to target creature equal to the number of Mountains you control."
Delraich73%
$1.11↑#27416↓0.0026.9 years
"You may sacrifice three black creatures rather than pay this spell's mana cost."
Dark Triumph72%
$0.10↓#23438↓0.22↑26.6 years
"If you control a Swamp, you may sacrifice a creature rather than pay this spell's mana cost."
Granite Grip72%
$0.12↓#145970.38↑27.6 years
"Enchanted creature gets +1/+0 for each Mountain you control."
Earth Servant72%
$0.04↓#26490↓0.0016.1 years↓
"This creature gets +0/+1 for each Mountain you control."
Fire Dragon72%
$5.45↑#26595↓0.0029.3 years↑
"When this creature enters, it deals damage to target creature equal to the number of Mountains you control."
Oxidda Golem71%
$0.15↓#16606↓0.0422.6 years↓
"Affinity for Mountains"
Flare of Denial71%
$3.54↑#1426↑1.01↑2.2 years↓
"You may sacrifice a nontoken blue creature rather than pay this spell's mana cost."