White Lotus Tile {4}
Artifact
This artifact enters tapped.
{T}: Add X mana of any one color, where X is the greatest number of creatures you control that have a creature type in common.
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Cards that do something similar 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.
Arbor Adherent 94%
$1.37#3110
"{T}: Add X mana of any one color, where X is the greatest toughness among other creatures you control."
The Legend of Kyoshi // Avatar Kyoshi 92%
$5.49#3451
"{T}: Add X mana of any one color, where X is the greatest power among creatures you control."
Mona Lisa, Science Geek 84%
$0.30#7161
"{T}: Add X mana of any one color, where X is this card's power."
Doc Samson, Super Psychiatrist 84%
$0.27#14867
"{T}: Add X mana of any one color, where X is this card's power."
Redshift, Rocketeer Chief 83%
$0.27#9524
"{T}: Add X mana of any one color, where X is this card's power. Spend this mana only to activate abilities."
Deathbloom Ritualist 82%
$0.27#12058
"{T}: Add X mana of any one color, where X is the number of creature cards in your graveyard."
Helga, Skittish Seer 82%
$3.55#4213
"{T}: Add X mana of any one color, where X is this card's power. Spend this mana only to cast creature spells with mana value 4 or greater or creature spells with {X} in their mana costs."
Harabaz Druid 81%
$9.15#6708
"{T}: Add X mana of any one color, where X is the number of Allies you control."
Wirewood Channeler 80%
$1.09#3604
"{T}: Add X mana of any one color, where X is the number of Elves on the battlefield."
Accomplished Alchemist 80%
$0.35#7296
"{T}: Add X mana of any one color, where X is the amount of life you gained this turn."