As long as this card remains face-up on your side of the field, when a mosnter is returned from the field to the owner's hand, the owner of the returned monster selects and sends 1 card in his/her hand to the Graveyard
Crush Card Virus was given away as a prize at Shonen Jump's Yu-Gi-Oh
As a creature that's on curve and sacrifices for a land, you can block and sac, or swing and sac, and so forth
"You want to look at the condition of the cards, because I think that's the biggest indicator around the value that the card can potentially experience." According to Holloway, cards are usually assessed by observing four specific areas during grading: centering, surface, edges, and corners
This effect is quite useful as it just simply allows you to see what your opponent is going to draw and will thus give you some hand information if you're able to keep track of what they've drawn and what they've played, which in turn can be good with cards like Mind Crush