pokemon mantyke cards LV.6 - Diamond and Pearl you will receive a card in the same listed condition. Mantyke Cards | Dex -

Image via SAYS If you compare these two cards above, the real Pokmon card (on the left) has a deeper, darker shade of blue, compared to the almost washed out colour of the fake one (on the right)

They give the deck a ton of draw power and explosive potential, letting it play on a different axis than before

You have to obstruct your view of one face in some way, whether through sleeves or by using the one-sided tokens included in some booster packs

Note that heroic is an ability that triggers upon your opponents spell being cast, so even if you destroy the creature in response, the effect of the heroic ability will still happen (if it has an effect that goes beyond just the heroic creature itself)