In my years of personal experience, examining good decklists, and talking to people much smarter than me, 50 mana sources is about the right number for most decks to shoot for, usually 37 lands and 13 ramp sources for a general budget deck
(Blue-White-Red) : Finally, we have our Science
Since then, it has been reprinted multiple times, appearing in Jumpstart, Murders at Karlov Manor Commander, and now MTG Foundations
These changes are all designed to make Bucky a worse card, as it has long been part of a large number of decks thanks to its easy ability to whittle down your opponents hand of any potential answers
2004-10-04 If you play Mana Short in response to a spell, it will have no effect on that spell since the mana has already been paid
Each player passes the remaining cards to their left, repeating this process until all cards from the first round of booster packs have been drafted