Trinisphere 
Artifact
$32.76 #5235 1.54 22.6 years
As long as this artifact is untapped, each spell that would cost less than three mana to cast costs three mana to cast. (Additional mana in the cost may be paid with any color of mana or colorless mana. For example, a spell that would cost 
to cast costs 
to cast instead.)
to cast costs to cast instead.)Click a line or tag to filter
Cards similar to Trinisphere 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.
Castle Raptors74%
$0.05↓#30835↓0.00↓19.9 years↓
"As long as this creature is untapped, it gets +0/+2."
Giant Tortoise71%
$0.07↓#23625↓0.00↓32.7 years↑
"This creature gets +0/+3 as long as it's untapped."
Blinkmoth Urn70%
$1.02↓#58250.47↓22.9 years
"At the beginning of each player's first main phase, if this artifact is untapped, that player adds 
for each artifact they control."
for each artifact they control."
Suppression Field70%
$0.61↓#13539↓1.05↓20.9 years↓
"Activated abilities cost more to activate unless they're mana abilities."
more to activate unless they're mana abilities."
Static Orb70%
$2.47↓#57432.62↑28.9 years↑
"As long as this artifact is untapped, players can't untap more than two permanents during their untap steps."
Winter Orb70%
$11.86↓#3369↑2.96↑33.1 years↑
"As long as this artifact is untapped, players can't untap more than one land during their untap steps."