Gauntlet of Might 
Artifact
$600.00 #12421 0.18 33.2 years
Red creatures get +1/+1.
Whenever a Mountain is tapped for mana, its controller adds an additional 
.
.Click a line or tag to filter
Cards similar to Gauntlet of Might 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.
Mirari's Wake90%
$3.05↓#713↑0.67↑24.4 years↓
"Whenever you tap a land for mana, add one mana of any type that land produced."
+1 more matching line
Zhur-Taa Ancient88%
$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."
Paragon of Fierce Defiance86%
$0.17↓#15725↓0.1912.3 years↓
"Other red creatures you control get +1/+1."
Wolfwillow Haven86%
$0.18↓#4995↑0.00↓6.7 years↓
"Whenever enchanted land is tapped for mana, its controller adds an additional 
."
."
Market Festival86%
$0.22↓#106380.33↑12.5 years↓
"Whenever enchanted land is tapped for mana, its controller adds an additional two mana in any combination of colors."
Dawn's Reflection86%
$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."
Overgrowth86%
$0.25↓#3164↑0.04↓28.6 years↓
"Whenever enchanted land is tapped for mana, its controller adds an additional ."
."
Vernal Bloom85%
$4.27↓#109570.35↑28.0 years↓
"Whenever a Forest is tapped for mana, its controller adds an additional ."
."
Boartusk Liege85%
$0.55↓#15064↓0.2618.5 years↓
"Other red creatures you control get +1/+1."
Gauntlet of Power85%
$3.80↓#2627↑0.2020.0 years↓
"Whenever a basic land is tapped for mana of the chosen color, its controller adds an additional one mana of that color."
+1 more matching line
Wild Growth84%
$0.40↓#216↑0.1633.2 years
"Whenever enchanted land is tapped for mana, its controller adds an additional ."
."
Extraplanar Lens84%
$12.94↓#1695↑0.1823.0 years↓
"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."
Verdant Haven84%
$0.05↓#127270.00↓13.7 years↓
"Whenever enchanted land is tapped for mana, its controller adds an additional one mana of any color."
Fertile Ground82%
$0.27↓#1094↑0.1128.0 years↓
"Whenever enchanted land is tapped for mana, its controller adds an additional one mana of any color."
Keeper of Progenitus82%
$2.10↓#142510.31↑18.0 years↓
"Whenever a player taps a Mountain, Forest, or Plains for mana, that player adds one mana of any type that land produced."
Ashenmoor Liege81%
$0.44↓#16638↓0.2218.5 years↓
"Other red creatures you control get +1/+1."
Dictate of Karametra81%
$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."
Blighted Burgeoning81%
$0.13↓#130550.273.5 years↓
"Whenever enchanted land is tapped for mana, its controller adds an additional one mana of any color."
Overabundance80%
$5.67↓#101170.59↑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."
Utopia Sprawl80%
$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."