All Gravekeepers you control gain +1/+1.

Cards in each player's graveyard cannot be exiled, moved to a different place, nor have their color or creature type changed.

If a spell or ability would move a card from any graveyard to a different place, or if that spell or ability would change the color or creature type of a card in any graveyard, counter it. If a permanent on the field has an ability that would do one of these things, it loses that ability.