At the beginning of each opponent's upkeep, that player reveals the top card of their library. If it's a creature card, the player puts the card into their graveyard and Shapeshifter's Marrow becomes a copy of that card. (If it does, it loses this ability.)
![Shapeshifter's Marrow [Future Sight] | Cracking-Singles](http://www.cracking-tcgsingles.com.au/cdn/shop/products/48cb3fa8-555f-4df6-994e-cf01896f7470.jpg?v=1622020810)
