Mox Jasper 
Legendary Artifact
$11.21 #2487 0.26 1.5 years
: Add one mana of any color. Activate only if you control a Dragon.Click a line or tag to filter
Cards similar to Mox Jasper 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.
Mox Diamond84%
$1117.50↑#247↑1.74↑28.6 years↑
": Add one mana of any color."
: Add one mana of any color."
Chrome Mox83%
$153.72↑#156↑1.49↑23.0 years↑
": Add one mana of any of the exiled card's colors."
: Add one mana of any of the exiled card's colors."
Orb of Dragonkind78%
$0.37↓#3775↓0.47↑5.3 years↑
"
, : Add two mana in any combination of colors. Spend this mana only to cast Dragon spells or activate abilities of Dragons."
, : Add two mana in any combination of colors. Spend this mana only to cast Dragon spells or activate abilities of Dragons."
Mox Tantalite77%
$10.74↓#4420↓0.287.4 years↑
": Add one mana of any color."
: Add one mana of any color."
Sarkhan, Fireblood76%
$0.46↓#5801↓0.06↓8.3 years↑
"+1: Add two mana in any combination of colors. Spend this mana only to cast Dragon spells."
Dragonstorm Globe76%
$0.27↓#28350.191.5 years
": Add one mana of any color."
: Add one mana of any color."
Coldsteel Heart75%
$1.07↓#21180.00↓20.2 years↑
": Add one mana of the chosen color."
: Add one mana of the chosen color."
Carnelian Orb of Dragonkind74%
$0.26↓#21950.204.4 years↑
": Add 
. If that mana is spent on a Dragon creature spell, it gains haste until end of turn."
: Add . If that mana is spent on a Dragon creature spell, it gains haste until end of turn."
Dragon's Hoard72%
$0.28↓#1194↑0.12↓8.3 years↑
": Add one mana of any color."
: Add one mana of any color."
Progenitor's Icon70%
$0.29↓#5305↓0.05↓2.9 years↑
": Add one mana of any color."
: Add one mana of any color."
Team Transmitter70%
$1.10↓#18258↓0.15↓0.3 years↓
": Add one mana of any color."
: Add one mana of any color."
Replicating Ring70%
$0.43↓#1634↑0.05↓5.7 years↑
": Add one mana of any color."
: Add one mana of any color."
Darksteel Ingot70%
$0.17↓#20990.00↓22.8 years↑
": Add one mana of any color."
: Add one mana of any color."
Khalni Gem70%
$0.26↓#16498↓0.09↓17.0 years↑
": Add two mana of any one color."
: Add two mana of any one color."
Relic of Legends70%
$0.76↓#533↑0.07↓4.1 years↑
": Add one mana of any color."
: Add one mana of any color."
Lapis Orb of Dragonkind70%
$0.26↓#6836↓0.06↓4.4 years↑
": Add 
. When you spend this mana to cast a Dragon creature spell, scry 2."
: Add . When you spend this mana to cast a Dragon creature spell, scry 2."