Okay, allow me to break this down for you.
Everyone knows the key to a Lost in the Woods deck, is, of course, Lost in the Woods. This all-star card allows us to completely enrag- deny our opponents the opportunity to successfully attack.
Now, it is entirely inconvenient to have to have mountains of forests on your side of the table, and so I suggest discarding the unnecessary forests to prevent hand overflow. This also allows for another mode of maintaining Lost in the Woods capabilities, through the use of Elixir of Immortality. Just use it's ability in order to refill your library with all of those happy little trees.
But, of course, it would be unnecessarily cruel to force them to play through their entire library, which could lead to a lack of people willing to play again. And so, I came to the conclusion that another victory condition, and this is where Pack Rat comes in. You don't need an excess of Forests, and so you can start to replicate your rats with your Forests in hand. Yay, An influx of rodents will increase your likelihood of lasting friendships.
Now, no Lost in the Woods deck is complete without the necessary Forests that allow the deck to work. To pay for Pack Rat, the inclusion of 4 Overgrown Tombs allows for Lost in the Woods ability while still giving the necessary Swamp mana. The rest of the slots are then filled with Forests, totaling out to 62 in case the milling approach becomes necessary.
I hope you enjoyed this deck list, and take Lost in the Woods to the next level.
Thank you, have a pleasant day.
