name: North Star
originalText: o4oc\nT: You may cast one spell this turn by paying its casting cost with any type of mana. For example, o2o\nGo\nG becomes o4. However, the card still retains its original color. This ability is played as an interrupt.
printings: LEG
text: {4}, {T}: 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.)