When Pit Keeper enters the battlefield, if you have four or more creature cards in your graveyard, you may return target creature card from your graveyard to your hand.
"The undead are not 'awakened.' They are evicted when there is no room left in the pit for more bodies."
![Pit Keeper [Modern Masters 2017]](http://www.cardmerchanttakapuna.co.nz/cdn/shop/products/f6b77690-43be-5bc2-80e8-e31cf999cb6b_76dac344-d7b0-4155-8a6d-ff9fe249bf78.jpg?v=1698570758&width=1445)