W = White = (Comes from Plains basic land) U = Blue = = (Comes from Island basic land) B = Black = = (Comes from Swamp basic land) R = Red = = (Comes from Mountain basic land) G = Green - = (Comes from Forest basic land) For newer readers, having "U" mean blue mana takes a little getting used to
Aether Revolt , the second set in the Kaladesh block, introduced a mechanic called improvise that allows you to tap artifacts to help pay for a spell
Oh, and such a card doesnt exist anyway since what really counteracts the ability to neuter both your hand and game plan for one mana
It takes some serious control cards to make this a viable strategy, but those are bread and butter cube cards anyway
The chances of that are extremely low, however, and the card also has a number of other drawbacks that restrict its potential
" For those who like historical relevance, this is the card that inspired the cycle of Pact cards in Future Sight