In terms of who should lead the precon, Frodo and Sam have a huge advantage: as we highlighted earlier, the deck is primarily a Food (18 cards) and Lifegain deck (19 cards), and Frodo + Sam are simply the best suited to lead that style of deck
We can stick a Phantasm and / or Spybug and, as we cast our removal, card draw, and other creatures, quickly grow them into massive threats that can win the game in just a few attacks
To get two or three demons out typically isn't enough, especially when your opponents have a turn or two to prepare removal
Then, the turn proceeds as usual, where the second strike's attack damage is resolved at the same time as the defender's damage (as in normal combat)
Regardless, its nice that all targets can come from the same graveyard, which rewards deckbuilding with a lot of possible targets