mtg cards ff sided token cards Final Fantasy MTG Common Set

Your worst case scenario is 3 for a 4 damage spell, which, you just won't cast

If you concentrate on land-based ramp that takes land out of the library, you run the risk of missing land drops as the game goes on, especially if you arent running enough lands in the first place

Yes, there were players who splashed a second colour for utility and sideboard cards but before Sling-Gang Lieutenant goblins stuck to the consistency that a mono-coloured deck offered

It isn't an additional cost

This is true even if the card you reveal has a mana value too great to be exiled or you reveal a card you could exile but choose not to