Contamination 

Enchantment
$4.94 #7916 1.50 27.9 years
At the beginning of your upkeep, sacrifice this enchantment unless you sacrifice a creature.
If a land is tapped for mana, it produces
instead of any other type and amount.
Click a line or tag to filter
Cards similar to Contamination expected a card that isn't here?
Reports become test cases the matcher is graded against before an update ships. Delvefall isn't a chatbot guessing, it compares the printed rules text of every card with plain math, and examples like yours decide which differences should count.
Infernal Darkness98%
$6.73↑#18560↓1.29↓31.3 years↑
"If a land is tapped for mana, it produces
instead of any other type."
Ritual of Subdual94%
$1.45↓#26308↓1.15↓31.3 years↑
"If a land is tapped for mana, it produces colorless mana instead of any other type."
Damping Sphere88%
$0.67↓#4998↑1.12↓8.4 years↓
"If a land is tapped for two or more mana, it produces
instead of any other type and amount."
Pale Moon82%
$0.46↓#27758↓0.75↓26.6 years↓
"Until end of turn, if a player taps a nonbasic land for mana, it produces colorless mana instead of any other type."
Demonic Appetite80%
$0.10↓#25436↓0.44↓16.4 years↓
"At the beginning of your upkeep, sacrifice a creature."
Oni Possession78%
$0.15↓#26801↓0.12↓21.9 years↓
"At the beginning of your upkeep, sacrifice a creature."
Abhorrent Overlord78%
$0.49↓#5925↑0.29↓13.0 years↓
"At the beginning of your upkeep, sacrifice a creature."
Demonic Taskmaster78%
$0.24↓#9559↓0.50↓14.3 years↓
"At the beginning of your upkeep, sacrifice a creature other than this creature."
Devouring Strossus76%
$0.81↓#21181↓0.00↓25.9 years↓
"At the beginning of your upkeep, sacrifice a creature."
Smothering Abomination76%
$0.33↓#3833↑0.28↓10.9 years↓
"At the beginning of your upkeep, sacrifice a creature."
Daemogoth Woe-Eater74%
$0.25↓#74260.59↓5.4 years↓
"At the beginning of your upkeep, sacrifice a creature."
Eldrazi Monument74%
$9.42↑#1455↑0.69↓16.9 years↓
"At the beginning of your upkeep, sacrifice a creature. If you can't, sacrifice this artifact."
Apocalypse Demon74%
$0.27↓#15704↓0.53↓9.1 years↓
"At the beginning of your upkeep, tap this creature unless you sacrifice another creature."
Lord of the Pit74%
$0.42↓#13006↓0.41↓33.1 years↑
"At the beginning of your upkeep, sacrifice a creature other than this creature. If you can't, this creature deals 7 damage to you."
Pulse of Llanowar72%
$0.28↓#26367↓0.37↓25.9 years↓
"If a basic land you control is tapped for mana, it produces mana of a color of your choice instead of any other type."
Liege of the Pit72%
$0.76↓#16604↓0.00↓19.9 years↓
"At the beginning of your upkeep, sacrifice a creature other than this creature. If you can't, this creature deals 7 damage to you."
Endless Wurm72%
$0.26↓#27292↓0.43↓27.9 years
"At the beginning of your upkeep, sacrifice this creature unless you sacrifice an enchantment."
Reality Twist72%
$2.80↓#27096↓1.32↓31.3 years↑
"If tapped for mana, Plains produce
, Swamps produce
, Mountains produce
, and Forests produce
instead of any other type."