Once the second chapter hits, each opponent discards three cards and mills three more, further filling up their graveyards for the final chapter
Fortunately there are a couple of solutions
In the video Inside R&D Magic 2015: Green, Magic developer Sam Stoddard discussed returning mechanics and reprints: Whenever we do a returning a mechanic for a set, we, of course, do want to have a big iconic card that reminds you of why the mechanic is awesome
However, if Merciless Repurposing is anything to go by, the mechanic is destined for Limited events and not much else
What are the fees for selling bulk Pokmon cards on platforms like eBay or TCGPlayer
Always check that the card packaging hasnt been tampered with and keep your receipt after purchase