You can support it with a fair game, which Hemsley did somewhat, but it can be a proactive fair game, and I think attacking your opponent from multiple angles makes it a lot harder for them to prepare for (are they trying to stop your creatures/Stoneforge or your graveyard?) Another card that I think is way too good not to see play is Dakkon, Shadow Slayer
The important thing to keep in mind is this is a midrange deck, not a combo deck
If you can't exile enough cards to meet or exceed the required mana value, you can't choose to collect evidence at all
This is also a deck that can get mana-hungry, so being able to find a land with it early on comes up
This does not mean graveyard synergies are bad, but Lorehold is not Witherbloom
The internet is still debating whether Massacre Wurm's smiling or not, though a bundle of joy like that