Also, amusing note: except for Rattleclaw Mystic, Nissa, and lands, every single card in my main deck is from Dragons of Tarkir
Combine those two monsters' ATK and Ritual Summon the 4000 ATK Ritual Monster to get yourself started
The support class can also be one that allows other investigators to do their jobs easier, either by setting up hits, making clue finding easier or lending help in tests
Hopeless Nightmare, Greed's Gambit, and Demonic Pact are already a great start to help us see more cards or hurt our opponent's hand, but I found that the more card advantage we can get on our opponent the better
Using the builder in this way will help players make the most of their cards, without having to make every decision about the deck
If things go wrong, Raise the Past can reanimate most of our creatures, and Midnight Reaper gives us a steady stream of card draw as we sacrifice our dorks