Choosing the the most important or impactful creature on the board and then the biggest creatures from your other opponents will is going to net you a pretty impressive body on top of the 7/8 youre already getting, with the benefit of what enters-the-battlefield or static affect the actually copied creature gives
At the very least,youll draw one extra card when your opponent draws one during their draw step
Shock Lands, Hallowed Fountain, Watery Grave, Overgrown Tomb and the rest, do the same job with one small catch, you take two damage on entry unless you let them come in tapped
Any other ability not preceded by these keywords is active regardless of the time period
SM Black Star Tsunekazu Ishihara GX Promo Card - $247,230 1998 Pokmon Japanese Promo Trophy Pikachu Bronze No
If you want to give your team haste as well tapping to shoot players or creatures down then don't sleep on her ultimate either