North Star 
Artifact
$28.28 #31785 0.07 32.4 years
, 
: For one spell this turn, you may spend mana as though it were mana of any type to pay that spell's mana cost. (Additional costs are still paid normally.)Click a line or tag to filter
Cards similar to North Star 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.
Standing Stones82%
$0.84↓#317200.1232.2 years
"
, , Pay 1 life: Add one mana of any color."
, , Pay 1 life: Add one mana of any color."
Quicksilver Elemental82%
$20.51↓#7730↑0.37↑23.0 years↓
"You may spend blue mana as though it were mana of any color to pay the activation costs of this creature's abilities."
Blood Celebrant82%
$0.57↓#5895↑0.33↑23.7 years↓
"
, Pay 1 life: Add one mana of any color."
, Pay 1 life: Add one mana of any color."
Vizier of the Menagerie73%
$0.36↓#4243↑0.049.5 years↓
"You can spend mana of any type to cast creature spells."
Kentaro, the Smiling Cat71%
$2.23↓#18219↑0.32↑21.7 years↓
"You may pay 
rather than pay the mana cost for Samurai spells you cast, where X is that spell's mana value."
rather than pay the mana cost for Samurai spells you cast, where X is that spell's mana value."
Agatha's Soul Cauldron70%
$37.83↑#1384↑1.23↑3.1 years↓
"You may spend mana as though it were mana of any color to activate abilities of creatures you control."
Chromatic Orrery70%
$31.99↑#1255↑0.56↑6.3 years↓
"You may spend mana as though it were mana of any color."
H.E.R.B.I.E., Lovable Robot70%
$1.01↓#10302↑0.39↑0.3 years↓
": Add 
."
: Add ."