Command Chair 
Artifact
$2.33 #25473 0.0 years
This artifact enters tapped.
: Add three mana of any one color.: Add X mana of any one color, where X is the greatest mana value among commanders you control.Click a line or tag to filter
Cards similar to Command Chair 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.
Firemind Vessel94%
$0.22↓#4284↑0.007.5 years↑
": Add two mana of different colors."
: Add two mana of different colors."+1 more matching line
Gilded Lotus89%
$0.83↓#416↑0.0623.1 years↑
": Add three mana of any one color."
: Add three mana of any one color."
Marble Diamond88%
$0.18↓#1116↑0.0030.1 years↑
"This artifact enters tapped."
Sky Diamond88%
$0.24↓#828↑0.0630.1 years↑
"This artifact enters tapped."
Moss Diamond88%
$0.22↓#4499↑0.0030.1 years↑
"This artifact enters tapped."
Fire Diamond88%
$0.24↓#743↑0.0030.1 years↑
"This artifact enters tapped."
Charcoal Diamond88%
$0.28↓#704↑0.0630.1 years↑
"This artifact enters tapped."
The Beacon of Kahless88%
$0.55↓#282930.0 years
": Add one mana of any color."
: Add one mana of any color."
Sceptre of Eternal Glory88%
$11.89↑#2403↑0.404.1 years↑
": Add one mana of any color."
: Add one mana of any color."
White Lotus Tile87%
$4.35↑#3779↑0.311.0 years
"This artifact enters tapped."
Timeless Lotus86%
$3.69↑#2082↑0.294.2 years↑
"this card enters tapped."
Coalition Relic84%
$0.24↓#3413↑0.0619.5 years↑
": Add one mana of any color."
: Add one mana of any color."
Worn Powerstone84%
$0.34↓#569↑0.0028.1 years↑
": Add 
."
: Add ."+1 more matching line
Prismatic Geoscope84%
$1.48↓#17009↑0.0710.0 years↑
"This artifact enters tapped."
Manalith82%
$0.19↓#7274↑0.0015.3 years↑
": Add one mana of any color."
: Add one mana of any color."
Oasis Ritualist82%
$0.15↓#233110.069.3 years↑
": Add one mana of any color."
: Add one mana of any color."
Transdimensional Bovine82%
$0.32↓#11364↑0.290.7 years
": Add two mana of any one color."
: Add two mana of any one color."
Thran Dynamo81%
$2.62↑#194↑0.0627.4 years↑
": Add ."
: Add ."
Elementalist's Palette80%
$0.31↓#3981↑0.295.6 years↑
": Add one mana of any color."
: Add one mana of any color."
Sol Grail80%
$0.29↓#251470.2430.4 years↑
": Add one mana of the chosen color."
: Add one mana of the chosen color."