Early game it gives two bodies to wear equipment
Standard's list of banned cards on MTGA is exactly the same with the exception above
Zekrom and Reshiram both appear to be emerging from the card itself due to the texturing and overall design of the card
Card advantage is a strategic concept (rather than a specific game term) and a lot broader, and basically means having more cardboard than my opponents. For starters, any card that puts more cards in your hand is card advantage, even if it doesn't say draw. But card advantage also looks at what happens in other zones
Cards like Living End and Hypergenesis are key components of specific deck archetypes, allowing for overwhelming board states and quick wins
If the chosen permanent is a copy of something else (for example, if the chosen permanent is another Clever Impersonator), then your Clever Impersonator enters the battlefield as whatever the chosen permanent copied