Fallow Wurm 
Creature — Wurm
$0.24 #30392 0.53 29.2 years
When this creature enters, sacrifice it unless you discard a land card.
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Thundering Wurm100%
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"When this creature enters, sacrifice it unless you discard a land card."
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$0.08↓#20272↑0.27↓10.4 years↓
"When this creature enters, you may discard a land card. If you do, create a 2/2 green Wolf creature token."
Cursed Monstrosity84%
$0.34↑#318600.4424.9 years↓
"Whenever this creature becomes the target of a spell or ability, sacrifice it unless you discard a land card."
Magmatic Insight82%
$0.12↓#6206↑0.00↓11.1 years↓
"As an additional cost to cast this spell, discard a land card."
Nantuko Cultivator82%
$0.19↓#13762↑0.25↓24.6 years↓
"When this creature enters, you may discard any number of land cards. Put that many +1/+1 counters on this creature and draw that many cards."
Ayula's Influence77%
$0.81↑#9347↑0.24↓7.2 years↓
"Discard a land card: Create a 2/2 green Bear creature token."
Bloodrage Brawler74%
$0.19↓#19358↑0.21↓9.4 years↓
"When this creature enters, discard a card."
Drekavac74%
$0.27↑#309940.21↓20.3 years↓
"When this creature enters, sacrifice it unless you discard a noncreature card."
Scorched Earth74%
$0.36↑#266801.29↑28.9 years
"As an additional cost to cast this spell, discard X land cards."
Rotting Regisaur70%
$1.73↑#5151↑0.13↓7.2 years↓
"At the beginning of your upkeep, discard a card."
Crosis's Catacombs70%
$0.32↑#9062↑0.08↓25.6 years↓
"When this land enters, sacrifice it unless you return a non-Lair land you control to its owner's hand."
Mox Diamond70%
$1146.91↑#247↑1.47↑28.5 years
"If this artifact would enter, you may discard a land card instead. If you do, put this artifact onto the battlefield. If you don't, put it into its owner's graveyard."