Resonating Lute 


Artifact
Lands you control have "{T}: Add two mana of any one color. Spend this mana only to cast instant and sorcery spells."
{T}: Draw a card. Activate only if you have seven or more cards in your hand.
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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.
Magus of the Library 100%
$0.47#18010
"{T}: Draw a card. Activate only if you have exactly seven cards in hand."
Lu Su, Wu Advisor 100%
$42.43#27977
"{T}: Draw a card. Activate only during your turn, before attackers are declared."
Talas Researcher 100%
#29303
"{T}: Draw a card. Activate only during your turn, before attackers are declared."
Izzet Generatorium 99%
$0.24#4682
"{T}: Draw a card. Activate only if you've paid or lost four or more {E} this turn."
Greenhouse // Rickety Gazebo 85%
$0.22#6609
"Lands you control have "{T}: Add one mana of any color.""
Mystic Skull // Mystic Monstrosity 85%
$0.14#16293
"Lands you control have "{T}: Add one mana of any color.""
Fa'adiyah Seer 82%
$0.17#21012
"{T}: Draw a card and reveal it. If it isn't a land card, discard it."