Many players would put it into their decks despite half their lands not being Forests, and as a result this ended up being far less effective than Zuran Orb despite its frustrating casting cost
And from there, anyone with a TCG they enjoy knows what happens next
With that said, I think it is important to have an idea of how the process works
Coin of Fate is an awesome example
This means that Errant isnt able to duplicate an Expropriate by herself, but if that Expropriate is already being doubled thanks to a card like Twincast, Swarm Intelligence or Narsets Reversal then Errant can make another duplicate of that duplicate
Sure, it costs three solid red mana just to get going, and is therefore an effectively awkward 4-5 mana spell, but that spell is a multi-tutor for a flurry of busted cards that pop out of your deck to wreak havoc