It doesn't copy whether that permanent is tapped or untapped, whether that permanent has any counters on it or any Auras and/or Equipment attached to it, and it doesn't copy any non-copy effects that have changed that permanent's power, toughness, types, color, abilities, or so on
Aurelia, the Law Above, for example, is only a 4/4, but allows you to draw a card each time any player attacks with three or more creatures , and deals damage to your opponents and heals you whenever a player attacks with five or more creatures
Every set brings new and powerful enchantments and artifacts, so simple solutions like this that include the Witch-Blessed Meadow side make it much easier to slot in a useful card with minimal impact to your mana sources
Easily one of the best Infect options available, period