People can sign Autograph Book more than once, but it's one page counter per person, not per autograph, so they're just taking up space where other people could be signing
You may play an additional land this turn
The issue that presented itself during playtesting was that Drana didn't have enough of an immediate impact and was too susceptible to cheaper removal spells
When Powder Ganger enters the battlefield, you create three tokens that are copies of it
It doesn't copy whether that permanent is tapped or untapped, whether it has any counters on it or Auras attached to it, or any non-copy effects that have changed its power, toughness, types, color, and so on
Now if you were going to drop this kind of money on a card, would you do it on this one