Extraplanar Lens 
Artifact
$12.94 #1695 0.18 23.0 years
Imprint — When this artifact enters, you may exile target land you control.
Whenever a land with the same name as the exiled card is tapped for mana, its controller adds one mana of any type that land produced.
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Cards similar to Extraplanar Lens 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.
Zhur-Taa Ancient90%
$0.33↓#8336↓0.00↓13.5 years↓
"Whenever a player taps a land for mana, that player adds one mana of any type that land produced."
Wolfwillow Haven88%
$0.18↓#4995↓0.00↓6.7 years↓
"Whenever enchanted land is tapped for mana, its controller adds an additional 
."
."
Overgrowth88%
$0.25↓#3164↓0.04↓28.6 years↑
"Whenever enchanted land is tapped for mana, its controller adds an additional ."
."
Market Festival87%
$0.22↓#10638↓0.33↑12.5 years↓
"Whenever enchanted land is tapped for mana, its controller adds an additional two mana in any combination of colors."
Dawn's Reflection87%
$0.20↓#9146↓0.33↑22.4 years
"Whenever enchanted land is tapped for mana, its controller adds an additional two mana in any combination of colors."
Wild Growth86%
$0.40↓#216↑0.1633.2 years↑
"Whenever enchanted land is tapped for mana, its controller adds an additional ."
."
Vernal Bloom86%
$4.27↓#10957↓0.35↑28.0 years↑
"Whenever a Forest is tapped for mana, its controller adds an additional ."
."
Verdant Haven85%
$0.05↓#12727↓0.00↓13.7 years↓
"Whenever enchanted land is tapped for mana, its controller adds an additional one mana of any color."
Gauntlet of Might84%
$600.00↑#12421↓0.1833.2 years↑
"Whenever a Mountain is tapped for mana, its controller adds an additional 
."
."
Fertile Ground83%
$0.27↓#1094↑0.1128.0 years↑
"Whenever enchanted land is tapped for mana, its controller adds an additional one mana of any color."
Dictate of Karametra82%
$0.79↓#6270↓0.1212.5 years↓
"Whenever a player taps a land for mana, that player adds one mana of any type that land produced."
Barbflare Gremlin82%
$0.43↓#8174↓0.202.1 years↓
"Whenever a player taps a land for mana, if this creature is tapped, that player adds one mana of any type that land produced. Then that land deals 1 damage to that player."
Overabundance82%
$5.67↓#10117↓0.59↑26.0 years↑
"Whenever a player taps a land for mana, that player adds one mana of any type that land produced, and this enchantment deals 1 damage to the player."
Nikya of the Old Ways82%
$0.33↓#10750↓0.247.7 years↓
"Whenever you tap a land for mana, add one mana of any type that land produced."
Blighted Burgeoning82%
$0.13↓#13055↓0.273.5 years↓
"Whenever enchanted land is tapped for mana, its controller adds an additional one mana of any color."
Mana Flare81%
$0.53↓#3340↓0.36↑33.2 years↑
"Whenever a player taps a land for mana, that player adds one mana of any type that land produced."
Heartbeat of Spring81%
$2.32↓#4288↓0.39↑22.1 years
"Whenever a player taps a land for mana, that player adds one mana of any type that land produced."
Shimmerwilds Growth81%
$0.26↓#7833↓0.080.7 years↓
"Whenever enchanted land is tapped for mana, its controller adds an additional one mana of the chosen color."
Glittering Frost81%
$0.25↓#10653↓0.255.7 years↓
"Whenever enchanted land is tapped for mana, its controller adds an additional one mana of any color."
Utopia Sprawl81%
$1.31↓#350↑0.1720.5 years↓
"Whenever enchanted Forest is tapped for mana, its controller adds an additional one mana of the chosen color."