It doesn't copy whether that creature is tapped or untapped, whether it has any counters on it or any Auras or Equipment attached to it, or any non-copy effects that have changed its types, color, power and toughness, and so on
If you're more inclined to want to do the crazy thing and combo off, I'd definitely point you toward Nim Deathmantle
I have a hard enough time making my own decisions in Magic sometimes
Himself has been playing Magic off and on since he was at school, and I started playing about four years ago, our collection has since grown from one shoebox full to several thousand cards
Preston can double your mana with enough ramp auras like Wild Growth, Utopia Sprawl, and Fertile Ground
He also makes food tokens cost one less mana to activate